Originally Posted by
sol95
*G, which your partner has, are allowed one guest to all lounges they have access to, so long as that guest is flying a *A flight on the same day. Doesn't even have to be the same flight.
So if you're flying the air Canada flight, then you'll be granted access. even if you have a LH boarding pass.
AFAIK guest must be travelling on the same Star Alliance flight as *Gold member to get acces to
Contract Lounge.