The beeps and boops also seemed to be a little more rhythmic and musical, though no one went full "Lifeform Song."
The flat-looking backdrop on the Klingon ship had to be intentional, if only because they did an exceptionally good job with Engineering this week, plenty of camera movement, a lot of (presumably) VFX-assisted shots with the camera was outside the volume of space (so to speak) enclosed by the AR wall, they really fought that the design of the set calls attention to the part where the people being disconnected from the structure in the background. It'd be very odd for them to put so much effort to that and just forget that the whole purpose of the AR wall is to align the background with the position of the camera.
I'm still not going to even try to figure out what possible in-universe justification there could be for the Klingon bridge having a waist-high to ceiling photo of a corridor behind it, though. Glitching holo-communicator?