Some time ago, placing our first B & O equipment, we had to compromise as well because of furniture issues. Our choices had been either placing the two speakers left and right, a little behind, our seatings. Or, diagonal so that the left speaker was aside of the BV and the right speaker was in the position described above.
We decided for the latter choice, adjusting the profile of the speakers balance accordingly to the set up.
For us it was O. K., but after awhile, we got used to watch TV with only the BV speakers on, but using the BL's when listening to music. It is indeed weird, if you hear e. g. the news speaker and the position of the picture differs from the tone. Wall mounting was no choice because of lack of space and because I don't like wall mounted BL 6000.
Right now in our new home, we are able to have them with our BV and BL 4000 (wall mounted, as rear speakers) in a surround set up, which realizes of course a much better rendition of sound e. g. in relation to the position of our seatings. But even there, if e. g. the news speaker is speaking, the tone is coming mainly (only) from the center speaker.
Regards,
Rolf