In their list of major important stations, they missed of NaNa! 😁 Actually, for many, Saphan Thaksin is an important station too.
It is a shame that BTS and MRT are not linked with a common payment method/card. Would make travel easier and better value. I used the MRT a few weeks ago and they now accept contactless debit/credit cards at the entry/exit barriers which is really handy (I used a UK credit card). Hopefully, at least, BTS might do same sometime.