at any time after the expiration of 7 days after consultation has begun under section 21 that the negotiations are unlikely to lead to a collective agreement registered under this Act as to all the industrial matters which are the subject of the negotiations; or
(b)
upon receiving a notification under section 21 that it is unlikely that conciliation will assist the parties to the negotiations to reach agreement,
he shall notify the Minister and, unless the Minister otherwise directs, the Registrar that a trade dispute exists.