Hi
l had problems with the then new Sky Q box to the HD621. l use a G65 and Panasonic Plasma screen. What solved my problems was the CYP AU 11SA which seperated the sound and picture. It does have more than 1 audio output and “might” be what you’re looking for?
Best
relham

#1 DSP9,7200HCSE Upgrade,G65, DSP3200, HD621, Oppo 105D Audiocom Signature BDP, Sky Q, etc.
#2 Prime Headphone and Power Supply, Sennheiser 800.
#3 F80 Director, Panasonic TXP60ZT65, 210, Zen Mk111, Chord 8 Switch, Roon, Tidal, Explorer2, Apple iPad Pro 2nd gen.Chord M6 mains block.