It depends on the airline,how late the connecting flight will arrive,crew duty hours, slots at the airports and how many passengers will be transferring. They will also check the passenger load on the next outbound flight.
What to do if you have a tight connection?
If you know your flight connection will be tight, ask for help from the flight attendant. They may be able to move you up or help clear the aisles if you have to make that run. It's also a good idea to let your fellow passengers know that you're trying to make a tight connection, so they can let you pass.
Do flight attendants know if you have a connecting flight?
Flight attendants receive a list of passengers who are headed for connections upon landing, says Heather Harrison, a gate agent who works with multiple major airlines. But alert them of your situation anyway. “If you're transferring to another airline, the flight attendants may not know it,” she says.