Ah, yes, you're correct...I mixed that up. It's UA182, and indeed it arrives in Z.

Sounds like it's indeed a viable option to do this routing, but it would be my second choice vs. one of the routes via MUC.

I need to balance award availability (LH vs United) with layover time in case there are issues (since I'll be booking through LifeMiles, and would like to avoid dealing with day-of changes with them if possible).