I'm guessing big dem dinner is an afternoon/evening sequester to get all their ducks in a row.

Talking points on issues that will arise, strong-arming the ones looking to bolt, etc.

Big power play, if you ask me, and may be an indication that they don't trust internal electronic communication any more.

Going with a wave of dems threatening to defect/bail on bloc that have to be corralled.

Not a sign of unity; the opposite. Schumer/Pelosi Power is eroding is my WAG.