I still don't understand why UA SFO_EWR flights had just minor delays. UA 2304 arrived at 5:57 pm, 47 mins. late. UA 2448 arrived at 8:02 p.m. , 30 minutes late, and UA 1428 arrived at 10:27 pm, 43 mins late. Also wondering what AS did with over 100 passengers who were on AS340 when the flight terminated in PIT. There aren't just a lot of empty seats on other carriers and it's a 5-1/2 drive from PIT to EWR. With a weather diversion like this I suspect AS had no obligation to get all those passengers to EWR.