In a campaign I was testing, the party got split. They are now in separate parts of the world, without any long range communication.
Now, we have only one day a week to play D&D, so separate meets are out of the question and the only things the party members can do in the time they aren't playing their characters is play NPCs. This keeps them engaged enough that they aren't bored, but this also makes turns and dialogue a lot longer.
Sometimes, one group gets over an hour of combat or dialogue but the other group gets only a few minutes. The problem is worsened because one group in a combat-heavy situation while the other is in a role-playing-heavy situation and combat takes more time than role-playing.
What do I do to divide the time between the two sub-parties more evenly, but still give both groups of players enough game play as their characters?