Beolab speakers dropping AirPlay from HomePod mini

When I ask my HomePod mini to stream music to my BeoLab 28 speakers, the speakers play for 30 seconds to 5 minutes....then stop. Sometimes I can restart, but usually have to completely close the B&O app and shut off whatever the Home App shows is happening with the HomePod...then try all over again. B&O speakers are wired ethernet...HomePod on wifi. Strong and fast wifi connection throughout house.