From playing game https://www.conquerclub.com/game.php?game=19704533 it looked like either secret diplomacy or a double account. Not sure if it's a double account but the game play wasn't consistent with two people trying to win independently. player that Bluebird1964 worked with was ejw2137. They had each other's backs the whole game and had played some double games together.
Game number(s):
Game 19704533
Comments: Not normal game play and the defense made in the comments section didn't line up with what was happening on the board (non-fog game).