For a level 10, 4-player party, the daily difficulty budget is 36k, so they could have 6 encounters of a CR 10 monster. However, I think this assumes they have time to patch up after a battle or even have a short rest.
How do I find a budget or multiplier for back-to-back encounters with virtually no time to rest between them?
If there are normally 2-3 encounters between a short rest, how much more difficult would it be in terms of number and hazard to have them back-to-back?
Would it be appropriate to apply the modifier for a group of enemies, despite not fighting them all at once? (Although 2x for 6xCR10 seems a bit too much...)
For the purposes of the question, let's not go in depth regarding specific abilities and short-rest recharges.