During Summer Jam last night, 50 Cent and French Montana both joined Chris Brown on stage.

This is notable because the New Yorkers have a longstanding feud, which flared up a couple of months ago on Instagram.

Their latest beef also involved Montana's boss Puff Daddy, whom Fif mocks relentlessly at every opportunity.

Diddy rarely fires back at 50. But he clearly knows what's going on, and last night he IG posted what could  be a subliminal directed at Montana.

What do you think? Is Diddy calling out French? Or did he just pick an awkward time to express that general sentiment?