It might but I haven't tried it know. Further in the thread linked @Wesayso had idea of lips between the drivers but it was never pursued very far.Great. I wonder if using something more elliptical would better for a vertical array of drivers.
Not really, in this circumstance they are pretty much equivalent.Also, wouldn't a roundover be better than a chamfer?
Here is a comparison of the simulated effects of a chamfer, round over, 13mm step and flush connection of a woofer to a baffle. The outer edge of the baffle had a 36mm round over in all cases so this is a fair comparison. 1m on axis and 45 deg off axis traces.