I can't say for sure but I'm dubious. I saw some BO CRT internals and it was more on the over engineered [0] custom designs than stamping somebody else's work. But maybe it varied over the years.
[0] to the point of causing electronicians headaches because the technology used was too peculiar
Yep.
We took a B&O VHS machine in to be fixed. Guy who specialized in fixing them, had a pile of pre-shelled guts he just fitted into the pretty B&O case.
Yep. In the days of CRTs, Sony’s heavily patented Trinitron (aperture grille) CRT tech was the best by miles - no way B&O could engineer that themselves.