What happen to transfer made between exchange if not confirmed ?

[Flater]

Hello,

I have made 3 transactions between exchanges, one of them : 92fedc84404843ff4d46c385aefb75b46e179668941107bcbfac795680b2af63
is stuck for 2 days now.

I have seen people stuck for 2 weeks and more here, i red that the block will reject the transaction at a point, is it true ? If yes how long it will take ? In that case will it be sent back to the sending address ? even if it's an exchange wallet ?

Thank you

[Xavofat]

i red that the block will reject the transaction at a point, is it true ?

Nodes are likely to forget your transaction.

If yes how long it will take ?

The default time for a Bitcoin Core node to forget your transaction is two weeks as of very 0.14, I think.  However, users can customise the time that their node takes to drop a transaction.

In that case will it be sent back to the sending address ?

Once a sufficient amount of nodes have forgotten your transaction, you may be able to send the coins again as if you had never sent them in the first place.  This is not being "sent back", but you will be able to use them again.