Apologies if this was covered earlier as its not easy to peruse 1500+ posts and I came to this one from Mr. Smith's referral from Lounge access for eUpgrade

If I understand correctly, In a case where one had cleared an eUp prior to day of travel, that passenger would have access to the MLL. Can someone confirm my understanding?

Follow up question: Should the former be correct and the Itinerary is YUL-YYZ (B fare eUped to J cabin) connecting to MUC(PY), would the same day business class rule apply for lounge access in YYZ INT'L before the YYZ-MUC flight, or is this pushing it?

Thanks in advance.