I haven't checked code - but since my wiring had the dishwasher and garbage disposal shared on a single 20A, I would expect that each now have a requirement to not consume more than 1200W.

At 1200W and a 2.5 gallon wash cycle, I'd expect heating from 70 to 130F would take about 20 minutes. Unless the pre-rinse cycle was extended, I would expect this would mean the soap was released at the start of the wash cycle before the water was to temperature.