I want to see the Precap again is it available anywhere? I think Biggboss told them that they both are only true and so they are selected to answer questions from people nu... Oviya had a mic on her hand... Seems like they already had some questions planned to ask acting like real people are asking them, then after one of the questions Oviya breaks down and Gayathri consoles...
I guess it was done in order for Gayathri to understand Oviya better and also to help Oviya have a talk with Gayathri who otherwise wouldn't even listen to Oviya...
Hope it helps Gayathri to understand Oviya's perspective ...
As far as why it was done and what was the need... I believe the channel doesn't want the contestants to think it was the channel's fault for portraying them in bad light and trying to help change themselves for good...
Thats just my Opinion...