If the landlord permits the tenant to remain in the premises for more than 90 days after the tenancy has terminated or has been terminated, without obtaining a possession order, or for more than 90 days after obtaining a possession order, the landlord shall be deemed to have granted, and the tenant shall be deemed to have accepted, as from the date on which that period of 90 days expired, a periodic tenancy of the premises on the same terms and conditions as pertained to the original tenancy immediately before its termination.