I should have said if you deliberately played 4 sixteenth notes using pure rubato is it at all possible to sound like the 2:3 in strict timing.
Im just trying to expand my view of timingYes but what is wrong with the 2:3 poly being seen as just 4 notes side by side being played in some other form of time such as rubato? And note the 2:3 the first note of each set starts at the same time so it would come down to 4 notes side by side if looked at linearly (take the 3 notes in bass and sandwich them up into the two notes in treble to create linearity)