Hi jodaboda,
Welcome to the forums

BIAB does not separately give the chord tones in a simplified format as such. It is possible to open the Notation Editor or the Lead Sheet view and see the accompaniment in notation. The chords can be worked out from this. in the image below, the notation editor is the single note on left and the lead sheet view is the pair of notes to the right.

Once in either of these modes, it's necessary to click on one of the accompaniment instruments (P, G, S: that is Piano, Guitar, String).

This will show the music's notation for that track (note that not all Realtracks will have notation but all MIDI tracks will). The chord may or may not be obvious because it will notate the actual music being played.
One other thing that you might like to play around with is the "Ear Training Game". This is found under the uppermost menu called "Window".

Click on "Ear Training Window" near the bottom of the menu that pops up.
Hope this helps,
Noel