I purchased a LG CX 55" and this soundbar. The LG CX 48" and the LG CX 55" have the same distance from the lower screen to bottom of their stands (1.3"), and both stands have a depth of 9.9". Since this soundbar only has a depth of 3.4", neither TV's stand can be placed on top of this soundbar. Since this soundbar's height is 2.2", it will block the lower part of the TV screen (block 0.9") if placed in front of the TV stand on the same surface the TV is sitting on.
To solve this problem, I build a wood platform that sits over the soundbar, and has 10" depth for the entire TV stand to sit on. The attached picture shows my stand turned upside-down, so that the opening for the soundbar can be seen.
I hope this is helpful.