It's completely normal for multiple simultaneous conversations to break out in a gaming group.

What's weird is if they're all in-character.

Transcript

{simultaneous side-by-side conversations}
R2-D2: Turn the next corner and you should see the Gungan azalea garden.
Luke: Uh... there's just grey corridors.
Han: You see, if I don't shoot first, someone else might get the first shot in!
Leia: What's the problem with that?
R2-D2: No water feature?
Luke: Um. No.
Han: It might be aimed at me!
Leia: My question stands.
R2-D2: Not even the contemplative field of raked pebbles?
Han: What's worse... there might be no shooting at all!