time for 290 and MTR to TSUEN WAN from PO LAM is the SAME . For Hang Hau, it's a bit slower than MTR. if 290 changes its terminal to Hang Hau North, time for 290 getting to Tsuen wan is =or> comparing to MTR.
It's not great for 290 cutting down to Hang Hau since the sectional fare system in TKO enables 290 to be one of the bus route in-district. Moreover, if 290 cut down to Hang Hau , number of trips for Tiu Keng Leng to Po tat will be decreased by 50%,which makes people anxious