11Where land consisting or forming part of the relevant land is, together with other land not comprised in the relevant land, comprised in a lease for a term of years unexpired, section one hundred and nineteen of the Act of 1845 shall have effect in relation thereto with the substitution, for references therein to the time of the apportionment of rent therein mentioned, of references to the time of the vesting in the acquiring authority of the leasehold interest in the first-mentioned land under subsection (6) of section seventy-five of this Act.