How much rest do you embed into your weekly workout routines?

I run a back to back PPL split most weeks with 1 “rest” day. I have an early Monday morning work meeting so use that day as a “rest” day, although instead of taking off entirely, I just run a high zone 4-5 treadmill session for ~1 hr. Usually, I strength training for 60-90 minutes followed by 60 minutes of treadmill 6 days a week (PPL/PPL Tuesday-Sunday). I’m technically only “resting” from strength training on Mondays, but it still helps with overall fatigue and the PPL allows enough rest between muscle groups so as not to overwhelm the whole system. I’ll occasionally have a really heavy squat/deadlift leg day that has me doing a lower intensity 2nd leg day of the week, but I typically don’t rest that much.
40yo in December.

2, Saturday and Sunday. Dynamic effort bench (all days with accessory work), Max effort box squat, ME bench, DE Squat/DL. One of the five weekdays is usually crushed with meetings, so it ends up being a flexibility/stretch day in the middle in a shorter than usual workout. If it's not, I'll do throw in a day of Olympic lifts just for a change of pace.

Just depends on my schedule and motivation. Sometimes I get in three full body workouts a week, sometimes one. Occasionally I miss a week. I average about twice a week when it's all said and done. Same with rowing on the concept 2. I'm in no danger of overtraining so I don't really track it.

Wednesday, Saturday, Sunday are my non-lifting days but I still walk every day.

Over 50, old man gray pubes wendler 531

2x days lifting
3x days conditioning
Do bodyweight push / pull on conditioning days
2x days rest - walk or hike

Push/Legs/Pull then rest two days then repeat.