I completely understand the theory that after 4-6 hours of recovery you can lift as much as you can before riding, it sounds good, but reality isn’t the same as theory. It is very easy for anyone to know for sure: go to the gym, hit the leg press, warm up for 10 minutes, then do 5x5 or 4x6 with the most weight you can with perceived exertion of 8.5-9 and 1 RIR. The next week ride a couple of hours, wait 4-6 hours and refuel, then do the same leg press workout. You’ll know very quickly that it isn’t gonna happen. It also matters significantly w/r to hypertrophy since that kind of training requires higher volume, and you won’t be able to perform higher volume training if you ride before (even with 4-6 hours of recovery). Again, very easy to test. You might be an outlier and that’s good to know.
I don’t see myself ever pairing a lower body lifting day with a day where I also cycle, even if I split the sessions up into AM and PM sessions. If I ever were to do that, my lifter brain would insist that I do weights first, even if that meant lifting in the morning, which is not my preference. The most recent research I’ve seen in this area says it doesn’t matter though so long as there’s a sufficient break between sessions. (Though I suppose it is unlikely any of the studies included in the meta analysis I’m thinking of included two hour endurance endurance training bouts so perhaps that confounds things.)