I have a MedEl CI on right ear; Phonak HA on left ear. Both have Bluetooth access, so trying to get them to work together w/o spending another $2000 or more to go back to Roger tech. I used Apple app = Audio MIDI setting to set up a Multi_Output device. Works great except for a millisecond delay on the HA side. Looking for extension of that app or one on iPhone that will let me adjust the sync. Thanks.