An application under this section must not be considered to the extent that it is in respect of a question on which the tribunal has already ruled.
An application under this section shall not be considered unless—
it is made with the agreement in writing of all the other parties to the proceedings, or
it is made with the permission of the tribunal ...
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Unless otherwise agreed by the parties, the arbitral tribunal may continue the arbitral proceedings and make an award while an application to the court under this section is pending.
Unless the court gives leave, no appeal lies from a decision of the court whether either condition specified in subsection (2) is met.