Interludes in Lip synced songs Vs montage songs

[jaiganes]

It somehow struck me yesterday as I was listening to songs of Raja - Does a 'typical' situation where someone is singing on screen - limit the duration and depth of the interludes?
Most delightful interludes In my sampling were from the songs which were 'non-lip sync' - the lip synced ones barring an exceptional 'Kadhal oviyam songs' were treated more functionally - meaning there were restrictions on the sounds in the ambience - meaning lesser scope for an expansive interlude bit. Just random thoughts, let us see if we come up with an effective compilation of the two.