Each Cal group is self contained, as long as it completes with no errors, the CAL for that procedure is saved to NV Ram.
Transient and CTT are most critical CAL, but PS,Hor and Vert are easily done and more important.
We use the original Tek cal, and the LeoBodnar for transient trim.
You can CAL without the Tek CAL, but it is long and doubtful of complete success.
Note that NV Ram defaults are available
Suggest you repost on tekscopes2, as our 2465B maven Chuck H was banned here.
Chuck may have more precise information.
Amicalement
Jon
Jean-Paul