How long after HLR do you get a decision?

How long after HLR do you get a decision? They found duty to assist errors so I have now completed all my c& p exams were completed 4 months ago, so now there is nothing to do but wait, which in total has been 8 months now. I hired a lawyer by the way for this process and they sent their arguments for approval of benefits last week. I know there is no true time frame of when I will get a decision, but was wondering how long did you guy’s HLRs take from start to finish?