So.
This means that the Wikileaks co-ordination ran through August and October.
It also raises a more important question. According to the indictment, this individual (thought to be Bannon), was instructed to reach out to Stone.
As Bannon was campaign CEO, this basically leaves Trump's inner circle, or Trump himself as the only figures more senior than him, who would be in the place to order such an action.
Note: theoretically, KellyAnne Conway was more senior than Bannon, but little evidence has linked her to the wider collusion narrative so far.