Sorry for the bump, but I just synced my 25 year old Chamberlain WhisperDrive opener (on my wife’s side of the garage, that I’ve been hogging since the SE arrived) and remote using the info from the video linked by
@Cheap Sunglasses above, and it works fine. She temporarily deactivated her Tailwind Vehicle Sensor while I’m usurping her garage space. When I get my side tidied, I’ll likely sync my Liftmaster opener, but I’ll also reactivate my Tailwind Vehicle Sensor and never need the HomeLink buttons again.