First thing you should know we have seen this same type of object before flying the opposite direction maybe about 3 -4 months ago. i look at the sky a lot for birds hawks mostly. 10/26/17 today was clear except for a few clouds on the horizon line to the south. it was just after noon. i do not know why i looked up because the objects made no sound at all. what i saw looked at first like a jet only it has this object about 1/4 the size of the lower object moving the same speed as the one below it. it was as if the smaller object could have been projecting the larger image below it, that is how connected the two objects seem to be like a cord or something was holding them together. the objects seemed to be in a flight patten (speed and elevation) denver to la only thing couldn’t see any wings no com or chem trail and no any jet noise at all. i lost view of it as it flew south out of sight. about ten minutes latter i saw an other one same flight path just one it did not have the smaller object above it, not a sound.