Newbie question about the security of mixing

If I am running my own node, and using a mixer to anonymize my BTC, will it not be connected anyway because the transactions are to/from my own node?

I mean I am sending the BTC to the mixer from my node, and then getting it back to another address, sure, but I am accessing that address from my own node…

Even if I am using TOR, is there not something that identifes the nodes and tells observers that these two addresses have something in common, the node on my machine?