In one of the videos (SPP?), Charlie makes it clear that there shouldn’t be sharp lines of demarkation between GPP and SPP. Rather there needs to be a relatively seamless flow from one to the next. The applies to SPP to Comp as well. When you count back weeks, there may not be enough time to fully adhere to one of the plans. You often need to start with some methods from SPP a little earlier than you like. The jump/run/drill circuit can often be started during GPP for example.