Originally Posted by
canadiancow
I think the spirit of the rules are "don't come to the airport stupidly early expecting to use the lounge, but if you fly in and are flying out without leaving the airport, it's fine". So I definitely think it's within the spirit. And you can clear domestic security with an international BP and use the domestic MLL any time, so I also disagree about it being an arrival lounge. I can't count the number of times I've used a domestic MLL with a TB or INT boarding pass.
While everything you say is correct, they do have a sign at the elevator to the DOM MLL directing PAX flying international to the INTL MLL, presumably due to frequent crowding.