However, where in any case the Governor General is satisfied that the owner of the land has refused to exercise his or her right to nominate a member of the Board or has unreasonably delayed such nomination, or where the persons interested in the land have failed to agree upon such nomination, the Governor General, by order in writing, may direct the chairperson, to proceed with the inquiry although there has been no such nomination by the owner, and in every such case the Board is considered to be lawfully constituted without the presence of such member, and, if there is any difference of opinion as to the amount of compensation that should be awarded, the decision of the chairperson is considered the decision of the Board.