Braising with 2 dutch ovens - time? So, the wife and I are in charge of New Years dinner. That involves 2 5-lb boston butts.

One dutch oven is allclad, the other dutch oven is cast iron. The braising recipe calls for 8-10 hours on low in a slow cooker, or 4-5 hours at 325 in a dutch oven.

If we try to braise with both pots in the oven, how will that impact cooking time? Will it increase cooking time since we have 2 pots?
There should be no adjustments required: 
Yes, two pots take a few minutes longer to heat up than one, but with 4-5 hours total, it shouldn't matter.