I doubt they used attack planner... These 'supports' were well over an hour late; the Cship hit at 17:11:31...I am guessing that it was their first time coordinating an alliance shared attack with the in game Attack Planner. You have to click the right buttons fellas to make that attack into a support run in the attack planner.
CLASSIC!!!The threat just elevated to a more serious level; rather than sending in support too early, arriving before the Cship, or sending in attacks too late, arriving after the Cship, they decided to combine both... Send in an attack too late... but the attack actually being the support!
My, and the rest of FS's reaction: