I can jump in though and say I have been working on this exact feature with my LC Gateway project and have just recorded a fresh demo where I use a regular LC remote to control a non Bluetooth Legacy locomotive and a simple TMCC speeder.
@MartyE I would say this fills in the gap you mentioned right? Though to be fair this does require an separate module (my LC Gateway in this case) and your answer to question (out of the box) is still correct of course.
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