this has been second time that i made a deposit to some address and despite it having lower fees than what it should have, the transaction gets confirmed super fast. (i am withdrawing from my exchange, they are including lower fee not me )

the transaction i made was a payment to someone. the address clearly belongs to a service 99% sure it is belongs to an exchange although couldn't find anything on walletexplorer.

the transaction had ~100-120 satoshi/byte fee (other times it had small fee also) and it got confirmed in 3 minutes.

current suggested fee according to 21.co is 220 satoshi/byte

so here is my question:
is it possible these exchanges go though different channels to get their transactions confirmed faster?

i am not going to share my tx ID because of privacy reasons but the block was mined by BTC.TOP if that helps.