Bypass BAY and halt at BYC is a bad move because BYC is situated in between 2 railway gates
So any train cannot halt for more than 1 minute
Also BYC doesn't have...
more... coach indication boards. So it is very difficult for people to locate their coach and enter the train within 1 minute
All trains halt at BAY for 5 minutes and all platforms have coach indication boards. So it is easy for passengers
Also quick Loco Reversal (LR) will be done at BAY when compared to other stations. So LR at BAY is not a big problem at all