That wouldn't increase the dynamic range, it's just preventing the overlaps from clipping. Both tracks would still have the same dynamic range, the relative overall volume might be different for the track you lowered/increased to match the other one, but I doubt the transition between the two would be considered increasing the dynamic range.

In order to increase the dynamic range of a mastered track you would have to uncompress/master it in the first place. If you are just decreasing/increasing the overall volume, you would have the same dynamic range just at a quieter or louder listening level.