My main headphone rig consists of the closed back Stellias driven by a Bryston BHA-1 with a BDA-2 & a Bluesound Node as DAC and Source. I love the setup! Coming from sennheiser misc HD Models up to the 800s. The Stellias were better in all but open wide soundstage Where it was still close. I also have a pair of Clear Mgs open back. If you love the Celestee, I can almost guarantee you’ll love the Bathys. Very recognizable family signature and satisfies my audiophile tastes like no other. Would love to give the H95s, 5909 and T&A Solitaire a good audition as the 3 most expensive BT options. They are way outside of my budget considerations so it’s just as well. As mentioned I’m really hoping Apple fixes the APM failures to match or exceed the Bathys. I love how Apple products work together and we are a Apple household.
It’s a common experience. They are simply better headphones. The ANC is tuned for music vs outright noise reduction so they are not as effective as the APMs in cutting noise. It’s quite the shock when going from APMs to the Bathys. I think they are the way forward in BT headphones. Enjoy.