Most of the actual legal work in that last week runs through your lawyer's office: verifying the mortgage funds have been advanced, confirming the transfer is ready to register with Information Services Corporation, and adjusting for property tax and utilities as of the possession date.
Your agent's job in parallel is logistics: confirming a final walk-through time, checking that anything agreed to be included in the sale is still in the house, and making sure you know exactly when keys change hands and who is holding them until then.
A quiet last week usually means the work happened earlier, not that nothing is happening; a scramble in the final 48 hours usually means it did not. Get your hand-reviewed valuation from Joel Dyck.