Well, perhaps he's addressing your last comment that "BIAB cannot keep more than one song file open at the same time". On a PC, you can load two instances of BIAB and you can see more than one song file at a time. Perhaps he is suggesting you can look to see if this feature is in your Mac version.

But if I'm reading your request correctly, you would like a file viewer that understands the BIAB file structure enough to give a quick view of the chords in the file. Such utilities exist that can give a quick overview of a Microsoft Word file, for example.

This makes sense. +1

BIAB 2024 Win Audiophile. Software: Studio One 6.5 Pro, Swam horns, Acoustica-7, Notion 6; Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors