Yes.
And I do that on a daily basis, quite often 6 or more parallel recordings.
My Duo 4K has two FBC tuners, each only having a cable on the first input, connected to 2 Unicable switches having 4 LNB's. Setup exacly like you posted in #16, only for different positions (13/19/23/28). See also my screenshots in #3.
No issues whatsoever.
@wanwizard I am struggling to get multiple recordings working with Openpli. Previously I used VTi but switched to Openpli. The setup for the virtual tuners C-H on my VU+solo4K does not work under Openpli. Is there an example how to configure tuner A-H using two wideband LNB's together with the Inverto IDLU- UWT110-CU010_32P. Thanks in advance.