Yeah, way back in 2007-2008. Whew, who on earth could remember that far back.
Both teams under one roof in the same building not sharing info because of different levels of primary sponsorship? Not likely. No matter which team had more backing $, and which had less, they both still benefit from sharing info & data.
The only way that Cruz could have meant that they are not a "team" with Tony is that they each separately own their respective teams and while finances are not shared, info and data are. Both teams share associate sponsors, and it would be in the best interest of all for the two teams to cooperate. This would technically be considered an alliance between two team owners, I suppose, as opposed to a team with several cars with one owner.