There are several methods to get these chords.
Use Playable RealTracks, (BIAB has a Playable RealTrack to use for RT742)
Use a SuperMidi piano rather than RT742 which may recognize the specific chord correctly or
Generate a Hi-Q piano to get the chords rather than use RT742.

Save the RT742 track as either a WAV or Artist Performance File to preserve it and it can be imported back into the SGU to then copy/paste the specific chords created using one of the methods above onto the RealTrack 742 in the appropriate Bars using the Audio Edit Window..

It's also possible other RealTrack Pianos may be tested over the Chord Sheet and that session artist did play these specific chords and the instrument sounds close enough to the original RealTrack to copy/paste that chord over the original. Audition other RealTracks by the same session artist even if the Style is different. There may be a usable chord in another Style.

BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.