Running Two ACs on Gennie - Shutting down

Thanks for the replies. The gennie kept running. I think the time2roll has the answer. It seemed like a load shed. The water heater was off and the fridge was on propane. I also thought that since I had the AC fan on high, both units may have coincidentally started at the same time so one shut down. It happened about three times during the last part of our trip during the hottest part of the day. We were also climbing at high elevation over 6000 feet. Perhaps the gennie surged. I’ll look at the manual.