PTT needed for both the TGXL and PGXL

Hi

I'm expecting my TGXL soon. Currently I am using the PGXL with both a Flex 6700 and ICOM 7610. Question-currently the PTT needed from the ICOM is connected to the PGXL PTT IN. I'm assuming (not in the prelim TGXL manual) that I would connect the PTT OUT on the PGXL to the PTT IN on the TGXL. Or should it be reversed to key the Tuner first and then the PGXL? I realize the Flex has the delays programmed in. What about delays for the PGXL (I adjusted the 7610 as recommended for a slight lag). What about the need for an additional lag now that the TGXL is inline? Your prelim manual shows interfacing only "others: transceivers with the TGXL and not also with the PGXL.

Thanks