Is sharing detailed player information about another player unethical?

For example, I play in a regular game of 30 players, almost all decent players with specific playing styles. $160 buy-in after a few hours a couple of K is on the table.

If I had a friend who plays in the same game and we discussed information we both have on the players and game. That we are always talking and learning. At the same time when we are in a hand together its go time and no mercy towards each other.

Is this ok?