How are you planning on using the Amp? Most commonly, you would use it to power two rear speakers, in which case, the answer is no. The playbar will talk to the Amp wirelessly. If you wanted to use the speakers to play front left and right audio, then yes, the amp needs to be connected to the TV...but you wouldn’t need to the playbar at all. If you wanted to use the amp for speakers in a different room, then no. You can group the amp with playbar to play in sync any time...but for TV audio, the amp will be slightly delayed...which likely isn’t an issue in a different room.
@melvimbe , I'm planning to use the AMP for rear two speakers as surround and the Playbar as main and the front speakers. How does that impact the setup?
Then the amp doesn’t need to be physically connected to the TV or playbar at all. Playbar will send signals to the amp wirelessly.
The CONNECT:AMP, on the other hand, does require a wired connection, as it doesn’t have the 5Ghz antenna used in bonding surrounds. So make sure you’re working with the new Amp, and not the old CONNECT:AMP.