Long time lurker, first time poster.

I want to know who gets the tip at a bike shop?

Is it the bike mechanic? The person that rings me out? Or shared?

I get that every shop might be different. But who calls and lets me know that my bike is ready? Would that be the mechanic that works on my bike?

The background of the questions:

I usually leave tips every time I get work done on my bike. Unless it's so simple that like a quick fix with some new small part(s) and I usually just pay the minimum labor charge plus the new part(s). Most of the work I get done is usually done while I wait. This means I will know who work on it and I can direct my tip to the mechanic or maybe just give it to the mechanic directly. Some shops, the mechanic would be the cashier as well.

What I want to know is when I leave my bike in the shop to get work done on it, I usually check it in with the mechanic that I have the consultation with. Sometimes that same person would call me to let me know the bike is ready, sometimes, it would be a different mechanic. Then I'd come in and another person rings me out (the original mechanic or the person who called me that it was ready aren't there . This is where I get confused. When I leave my tip, who gets them?

It doesn't matter much to me if the tips are shared, but if that isn't the case, I'd always want to give to my mechanic directly - like come back some other time and give the tip.

The particular bike shop is Turin on Damen. My favorite shop as it is close to where I live and they have always done great by me and ALL of them treat me well. I used to think the tips were shared, but I saw something that makes me think that the person receiving the tip would keep it (which was fine by me because that person actually worked on my bike).

Two last questions:  

What is the etiquette on coming back at a different time after picking up the bike and just hand some cash or a bucket of chicken wings to the mechanic for previous work done?

Is it reasonable to ask who actually worked on my bike? Or would that be rude?