And to amend the way back (YOW-YUL-MUC-HAM).. YUL arrival gate 32, dept gate 61. No security (actually you just pass right behind the security) and no passport control, but a BP scan if you're actually on an international flight (<1min) and lounge is just some more meters on on the right (around 52).

Weird thing in YOW.. co-traveller on a Y to YUL and C to MUC: almost got denied access to lounge; not because Y ticket, but not on an AC ticket (220/LH stock).