But after Pipeline suggested in a reply to my discussion of this issue on the BiaB forum that I check out the VST plugin for using two instances of BiaB within Tracktion, I'm thinking of pursuing that option instead of RB when I have the time to set it up and try it out

If you had fun exploring RB, you are going to have a blast with the BIAB VST. I can't wait for all the drama to come. grin

...until I'm sure that I've "beaten this horse" completely to death

Not the first time I have heard this expression here in the forum. crazy
BIAB2022, Dell XPS 8920 Intel Core I7-7700 @ 3.60GHz 16GB RAM, REAPER, nanoKontrol2, SL88-Studio, M-Audio61