Multi-tiff

Hello all. I'm scanning photos with a Canon RS40 and saving each as a 600dpi uncompressed TIFF file. For the few photos that have notes on the back, I am using the option to "Save all pages as one file." Screenshot below. When I open the TIFF in Lightroom (Windows), I see the front of the photo but not the back. May I please get some help understanding how to access the back (second "page") of the TIFF file, or is this second page deleted when I open the TIFF in Lightroom? Thank you!