hi @dineshprasanth
With stitching enabled, I generally see a small decrease in Sessions (vs. Visits). When CJA knows the activity on multiple platforms belongs to the same Person within the timeout period (default is 30 minutes), that activity will be 1 Session. In AA, if you're using cookieID or something similar, those would likely be reported as separate visits.
Similarly, for People, the count is generally lower based on stitching.
There are some cases that could increase People count. If using field-based stitching, CJA will also report two different loginIDs as separate people, even if using the same cookieID.