Not just Int'l and T2 but T1
With the addition of various AS flights into the mix at SFO T2, there are situations where there are not enough gates available and, balkanizing things further, VX uses gate 47 in T1. I flew VX 938 out of gate 47 tonight (and another VX flight from same gate over a month ago).
While T1 and T2 are connected airside, and AA splits its flights between the two terminals (primarily with former US destinations, like CLT and PHX, in T1), it is still inconvenient, particularly if your timing is tight, security lines slow, etc. As Alaska grows at SFO (with the new flights starting next month and more destinations coming), will the three-way terminal split become even more common?