I picked up 5 second hand copies of Gartenbahn Profi at the WVR gala last week. In issues 2 and 4 2022 there was an article linking 433 and 2.4Ghz systems via LocoNet and XpressNet via a Tams Master Control, I do not read German so cannot comment how it was all done, however I can understand the simple diagram. The Massoth system was shown as the 433 plus Lenz on the XpressNet one, but with 2.4 systems shown as Tams, iTrain, Roco, TCS and Uhlenbrock but sadly not the Massoth. I wonder if there is a route hers for a tech savy bod to look at?
I have noted what
@AlanL says in post #4.