Kinda.....
You can use a High Freq Splitter with Power Passing only on 1 side.
Then the Openbox will be the Master (control the Polarity ans Switch), and the other will be the slave. - kinda a pain in the a**.
I can't get the vertical transponders on the openbox and the 410 doesn't get signal. They both work fine as long as I don't have them looped together. I didn't know if the adverage splitter would work. I don't wannabe blow up something lol
Possible, but, I think, you'd need the splitter or block, and use the FTA to run the polarity. Or twist the lnbf, and remember that your polarities on FTA are opposite. I can't think of any other solution. Seems Motorola put the capability to change this in 922's, but not the 410's. [???] Had an Idea of adding a 410 here, so now, I know of a small problem.