They were shooting on adjoining sets in Binny Mills for Mankatha and Velayudham respectively.
The buzz is that both is on the same page politically, and is the only two actors who stood up to the domination of the ruling party.
In recent interviews they have mulled indirectly about joining politics, creating tremors in TN politics.
Meanwhile director Venkat Prabhu has tweeted: “Wow Thala and Thalapathy in the same place shooting! It was great to see both of them together!”