The soundbar only has one hdmi connection, so the ONLY way to use it is with ARC and components connected to the TV.
Bill, this simply tends to cause problems. If you only use the TV and internal apps, you're fine, but add anything else and it gets prickly. Add that the TV and soundbar are...
As Wayne has alluded to, it's almost impossible to give 1-2-3 instructions for anyone who has not worked with the exact combination of equipment you have. So, to reinforce what he said, in general you want everything set to bitstream audio. If the soundbar has any channel level adjustment, you...