In practice most holdovers get resolved within 7 to 14 days through the lawyers directly, because the seller is now occupying a home they no longer own and accruing daily costs, interest and potential legal fees on top of whatever profit they made at closing.
The buyer's own costs during a holdover, temporary housing, storage, moving delays, can add up quickly, which is why a buyer's lawyer will often push for a holdback of sale proceeds in trust until possession actually happens, rather than releasing full funds on the scheduled date.
Joel Dyck builds a firm possession date and clear conditions into every contract to avoid this situation. Get your hand-reviewed valuation from Joel Dyck.