Does the oil consumption take place during and after highway driving? And is the “no oil consumption” during stop and go short trips.
If that is the case, you have CONTINUING oil consumption is a very worn engine that during short trips puts a lot of blowby gasses (water vapor and some raw gasoline) in the crankcase keeping the oil level up.
The minute you take a fast highway trip all that condensation evaporates, leaving only oil at a much lower level. Hence the “consumption”.
Veteran mechanics refere to this as “the case of the mysterious oil loss”.