OK … so does that mean that Duo Phone is ONLY for folks with telecoil in the aid? I’d sure LOVE to have my new Phonak Life aids automatically send the sound to BOTH ears (if I have Bluetooth off or am handed a phone). But like you, I actually have to reserve one of my precious programs for Acoustic Phone alone - it is THAT important to me.
Without being able to stream a call (if my BT is flaky or drops out) I simply have to have Acoustic Phone as a backup to hear the sound in BOTH ears.
I’ll pose this question to my audi when I see her next week, cuz either way, I’ll want to have a non-Bluetooth option to help me hear stereophonically on the phone! 
Thanks so much for being a sounding board here!