No prob sir ArnoldC. Since these are off-the-shelf parts, I don't see much problems with them sourcing from each other. Hehehe.
Even during the CRT days, a lot of the internal parts (especially picture tubes) were also sourced from what would seem like their direct market competitors.
I worked for "V" company before, and they sourced "S" LCD and Plasma panels in the past due to cost (despite their parent company making their own display panels then).
My old "S" TV has a "H" tube after i tore it apart.
My uncle worked for "M" in the 90s, and confirmed that their TVs had "S" tubes then. Only their high end TVs used tubes from their sister-company.