Trouble with Audio with Samsung SmartView

Hi

I'm using the basic version of Zoom because I rarely use it.  But, when I'm Screen Mirroring from my Samsung S10+ phone using Samsung's SmartView to my Samsung TV (UN40H5500AF), I lose the sound on the TV about half-way through the meeting.  Video still shows on the TV but the sound reverts to the phone.  I can't find any settings on either the phone or the TV, so I'm wondering if this is a Zoom issue, as it ONLY happens with Zoom.  Audio remains on TV with every other mirrored activity.

Please help!

Thanks in advance!
Jim