Is it possible to know if two+ btc addresses belong to the same wallet?

[o_e_l_e_o]

Further to nc50lc's answer, the public key which is revealed when you spend from an address also cannot be used to generate new child keys, as this process requires something known as the chain code. The chain code is something which is generated from the parent keys, but it is not stored anywhere on the blockchain and is not revealed when you make a transaction; it is only generated and used locally by your wallet software.

[Fivestar4everMVP]

As said the title;
Is it possible to know if two or more addresses are related to one wallet?

Simple answer to this question is - -

No...

Though there are exceptions, but before I discus the exceptions, let me say that, if it was possible to know that two or more addresses belong to one wallet, then there wouldn't be any need to implement the "automatic generate new address" feature each time transaction is received, which is found in some wallets like coinomi.
And secondly, the generate new address feature also serves as a way to keep a user's privacy since it keeps preying eyes away from knowing the amount of bitcoins that's contained in the wallet, if it was possible to know if two or more addresses belong to one wallet, then again, the generate new address feature will be useless here.

Now, talking about exceptions, I am not a technical person, but I am just imagining that there might be a way, or better put, loophole through which those who have good  technical knowledge of wallets (and how they work on the development side of it) might know how to figure out if two or more addresses belong to a single wallet, this I don't know and have not heard of, I am just speculating here, and I hope I am wrong.

[pooya87]

Now, talking about exceptions, I am not a technical person, but I am just imagining that there might be a way, or better put, loophole through which those who have good  technical knowledge of wallets (and how they work on the development side of it) might know how to figure out if two or more addresses belong to a single wallet, this I don't know and have not heard of, I am just speculating here, and I hope I am wrong.

Technically it is impossible to know if two addresses are linked (whether from the same wallet or have any connection whatsoever). All we can do and all the blockchain analysis companies do is report the likelihood of it being linked.

For example one thing they do is to speculate which output is the change address (eg. round number is payment, the other is change) and claim that it belongs to the same wallet. But this is speculation and we still can't say for sure. The round output can be the change or it may not even have a change.
Another thing is claiming that inputs of a transaction coming from 2 different addresses links those 2 addresses but again this is speculation. The two people could have joined their inputs to "mix" them.

[PaperWallet]

As said the title;
Is it possible to know if two or more addresses are related to one wallet? and if from transactions i can figure possible connection (same wallet) between addresses.

I post this here because i think it's a beginner question, no?

I do not know if I really understand your thread. Are you asking if two BTC addresses can belong to one and when someone send coin it will enter all or enter one? If it is like I will strongly say NO because first of all looking from the cell phone numbers, two persons can not own the same number, now if two persons own the number there will be a big problem. When someone call which of the side the call will go is an another issue for the service providers. But if you are talking about wallet not not addresses then I will say YES. Two or more addresses can belong to one wallet. The way I discovered it. one wallet can create more seed phrase and if the wallet can create different seed phrases which they belong to different addresses then one wallet can have more than one address that are related but they would receive different transactions even at the same time.

You're missing the point by a lot. Anyway, this thread was created 3 years ago. I just pumped it up a few days ago to ask a related question, but there is no point in answering in this thread anymore.