Cannot learn Time Machine backup with APFS case-sensitive format on Catalina

So I took a time-machine backup of a mac working BigSur, and the backup drive format defaulted to APFS (case-sensitive).

Now I’m making an attempt to learn this backup from one other mac working Catalina (can not replace for varied causes) and the time-machine simply exhibits clean and I can not entry the info. I do know the info is there as a result of I’m able to see it once I join the backup drive on my sister’s mac (working BigSur).

How do I learn the info on the mac with Catalina? Does Catalina not assist APFS case-sensitive?

Attempting to keep away from having to repeat all the info to my sister’s laptop computer after which reformat the exterior drive and replica it once more.