sub + dual connection to Soundbar pulse + and NAD-M33

Would it be possible, please, not to detach the sub + from the soundbar after connecting the RCA cable to the NAD M33?One option precludes the other, which is a great pity.I want to watch a movie at home on 5.2 system from Bluesound and at the same time be able to play music on Nad M33 with sub + sub band support.well thank you