I see the Berner Oberland Pass is available at these websites:
https://www.swissrailways.com/en/buy-berner-oberland-pass
https://oev-shop.bls.ch/en/product/berner-oberland-pass?productID=1061
Which is legit? Or are they both legit?
Do I buy the HFC in SBB App? So when a conductor comes to check tickets, I will show the BO pass (as a PDF document) and the HFC in the SBB App?