Complex sentence: After entering the bank, Phillips and Mătăsăreanu fired multiple rounds to frighten the customers and they forced the manager to open the vault and fill a duffel bag with all the cash in the branch.
Split into simpler sentences: After entering the bank, Phillips and Mătăsăreanu fire multiple rounds to frighten the customers. They then force the manager to open the vault and fill a duffel bag with all the cash in the branch.