I have a similar setup to yours. Have been running Sonus Faber standmounts(Cremona auditor) with a Pathos Acoustic Classic One for over 15 years and recently tried to buddy it together for a home theatre setup. Marantz 6014 + monitor audio centre with MA bronze 2 for rears and B&W atmos ceilings speakers. Also got a pair of B&W 606s to A/B with Bronze 2 and Sonus Faber. With home theatre I found little practical differences with the Pathos running a preout to the Sonus Faber with most movies unless there was a large orchestral/musical component to things. I think the visuals, centre speaker and overall synergy with the system takes precedent over the superiority of the dedicated stereo setup.
If I was starting out or on a budget I could probably live with a Marantz 6014 stereo out to Bronze 2 or 606s. However once you listen the warmth and depth from a better dedicated stereo setup it is hard to step down. I also found that the Pathos + budget speakers(bronze 2/606) edges the Marantz + sonus faber combination for music.