ideally, the spin off is suppose to run on a parallel time line or atleast in does in western shows,
if it does run on the same timeline, and charcters make appearances on the spin off and orignal show as well, it is written well and made sure it makes sense.
Unless it is stated that the show runs on a different timeline, like the spin off series will focus on characters in the past or future.
In those cases, you don't get the same characters in both shows (obviously, cuz different time periods)
however, according to various articles, Gul/PH stated that the timeline will be the same...
.so basically these flaws and missed up timing are "bloopers" and they will continue to happen. because once a show is a hit in tellywood, no open really focuses on the details, especially Trp aunties.