Joey_Fingarelli wrote:My question is this: normally a Purifier Squad has the Brotherhood of Psykers (Mastery Level 2) special rule, but if i'm using the Combat Squad rule do I now have TWO Brotherhood of Psykers (Mastery Level 2) units?
Yes.
Can both squads generate Psyker abilities, does one squad not contain a Knight of a Flame?
Yes, they are separate units each with the Brotherhood of Psykers (Mastery Level 2) special rule. As the Combat Squads special rule explains, you take your one 10-man unit and determine which models go into each of the two resulting 5-man units. You cannot take a second Knight of the Flame in the 10-man unit, so you must choose which of the 5-man units the Knight of the Flame goes into.