After you buy a home and get the mortgage for the home then it can take around 48 hours for the loan to actually fund after you close on the house.
So you usually have to wait until 48 hours after you buy the home for the loan to fund and the money to go to the person you bought the home from.
Then within 48 hours you can usually move into the home or property after you close on the home or property.
If you haven't heard back from the bank on the closing within 48 hours then you should call the bank to see what is going on.
If the loan is approved then you should have it funded within 48 hours at most although I've known some to take 3 days to fund.
The buyer of the home doesn't have possession or own the home or property until the mortgage actually funds and the seller of the property or home hasn't legally sold the property until the mortgage funds.