Gerry Horkan (Fianna Fail) | Oireachtas source

The rules do not permit me to allow people to throw in heckles, digs, questions or whatever one wants to call them. This applies to the Minister of State as much as to the Senator. The Senator says her piece, the Minister of State responds and the Senator can come back in. That is the way it works. The Senator cannot keep chipping in in the middle of the Minister of State's contributions.