The other issue with overseas Polaris lounges is how to police them so that only long haul international F and J pax can use them. In the US that’s straightforward and the only OALs excluded are Air Canada (and presumably Copa and Avianca). But overseas is very different.

LHR would be sort of okay as the short hauls depart from T2A and UA uses T2B with the long hauls. But you could still have a LH pax go all the way out to B and be denied access. And what to do with TK?

HKG you’d have to exclude presumably SQ, TG, BR, CA and ZH. And what about NH and OZ? TYO and ICN are only a little over 4 hours, yet NH may be carrying UA J pax to connect to UA at NRT/HND.

And then there’s TYO where in addition to excluding CA/OZ/BR they’d have to check every NH boarding pass for the destination and work out if the destination qualifies. Would they allow NH to HKG but not to CAN or ZH to SZH? And would UA allow GUM pax?