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I am going to give you an answer as a user.
1st, it can take as long as your priority to respond to this post:
OP1: ah, I understand (hight priority)
OP2: but, since the response interests you little, that is, it's already March 2, its priority is low.
So, the important thing when making a bitcoin "send" is that the priority shown in the mempool is basically a projection of what you should pay at most, high priority, and at low priority to have an estimated time for it to be confirm your transaction.
It's that simple, it is an "estimated" time, if the high priority mentions "approximately" 10 minutes, the time can even be less than 10 minutes, or more than 10 minutes, why? It depends on various factors.
Anyway, This is why some use RBF, because the mempool conditions can change in seconds, and the priority price changes, so you check and increment to the new estimated sat/vB value.
Please, don't put in more money than you should, let's say that if a transaction is 35sat/vB, some use 70sat/vB,ok, if the priority is going to change and your transaction is going to be prioritized, but you're giving more money than you should.
In fact, from my user experience it is very possible that the mempool changes to 100sat/VB and your transaction does not have a high priority.
Low priority, it works the same, do not use rates without priority unless you are sending small amounts and the 3%-5% ratio is within the limits, for example send $10 and pay a fee of $1, that is, cheap,(!), but not for that amount since it represents 10%.
There are people who want to send $50 and obviously they don't want to pay a hight priority fee.
In conclusion, the time they show is a reference, it is also good to know that some wallets tell you how many blocks your transaction is waiting to be processed.
S:https://mempool.space/