The judge hearing proceedings under section 19B (the "forum proceedings") must decide that the extradition is not barred by reason of forum if (at a time when the judge has not yet decided the proceedings) the judge receives a prosecutor's certificate relating to the extradition.
That duty to decide the forum proceedings in that way is subject to the determination of any question relating to the prosecutor's certificate raised in accordance with section 19E.
A designated prosecutor may apply for the forum proceedings to be adjourned for the purpose of assisting that or any other designated prosecutor—
in considering whether to give a prosecutor's certificate relating to the extradition,
in giving such a certificate, or
in sending such a certificate to the judge.
If such an application is made, the judge must—
adjourn the forum proceedings until the application is decided; and
continue the adjournment, for such period as appears to the judge to be reasonable, if the application is granted.
But the judge must end the adjournment if the application is not granted.