Gave up on getting the Linksys router to work with Starlink. I now can confirm that the Netgear AX6200 RAX78 router is compatible and works with Starlink.
https://www.netgear.com/home/wifi/routers/rax78/
The Netgear AX6200 is Wi-Fi 6 not 6E like the Linksys. No issues, connected and setup on first attempt.