Just to make myself clear - which I obviously didn't ! - i never use the timeline in BIAB. For navigating about a song in BIAB I find it easiest to use the chord sheet. as a guitarist the chords are the easiest way for me to see where i am in a song and the part markers distinguish between a and b parts. also - unless it's a really simple song - i rarely use the number of choruses option as i enter songs unfolded so usually blue marks a verse and green marks a chorus.

as for RB the current time is helpful but for editing i use the 'from and to' boxes on the tracks window. clicking on the bar and beat line at the top gives me a precise location to enter. i find the tracks window audio wave form more than adequate for audio edits rather than entering into the audio edit window.

for 'getting around' in a song the RB part markers are ideal. first verse, first chorus, middle eight, solo start..........whatever i need i can see it and 'go to'.

elapsed time would be of no interest to me in BIAB but it seems other people would find it useful.