No, Reliance acquired Network18 (including Viacom18) only in 2014. Until that time, it was a part of the TV18 group founded by Raghav Bahl. You should know the pre-Reliance history of Network18/Viacom18 as explained in this excellent book.
Network18: The Audacious Story of a Start-up That Became a Media Empire - Amazon.in
Dada, @Divyam bro i guess would be referring to post 2014 scenario once Reliance acquired TV Channels /Broadcast Business of Mr. Raghav Bahl