(1) This Part applies to a dispute in connection with a claim for compensation
between--
(a) the person who makes the claim and a person on whom the claim is
made, or
(b) the employer on whom the claim is made and the insurer on whom
the claim is made.
(2) This Part extends to a dispute that concerns failure
to commence provisional weekly payments of compensation as required by
Division 1 of Part 3 (even though no claim has been made for that
compensation) and so extends as if--