RFU chief executive Francis Barron was insistent that Ashton had been consulted at every stage of the recruitment process for Johnson.
He said: "I am concerned about claims that Brian was not being consulted because I am being told he is. Rob has different systems in mind but that does not exclude Brian.
"I don't know if we will be appointing a new head coach because we are only dealing with a new team manager. Rob is currently putting the final pieces of the jigsaw together and we expect it to be all sorted out fairly quickly.
"Brian will have an input in the team manager position and he has not been isolated. The team manager position has to be approved by the management board."
Johnson is still expected to be handed the official title of team manager, even though some reports earlier today suggested that he would be offered the position of head coach - the role that Ashton currently occupies.