Basically, if your baby is predisposed to nipple confusion, the Playtex nipples will compound the problem. The way that they are designed, it is hard for the baby to get the nipple back into the sucking spot in the back of his mouth. The baby may learn to suck on just your nipple when nursing instead of getting more of the areola in where he can properly compress the milk ducts. Someone other than Mom should offer the bottle. If possible, leave the house.
Babies are smart.
Your baby may smell, hear or see you and hold out in hopes of getting his meal fresh from the tap. If the caregiver or the baby gets frustrated with trying the bottle, have them take a break before trying again. Give each of them time to collect their wits before starting over. One thing that worked well for my DH was pacing. He would hold DS and pace, patting his behind, until he was calm and then insert the bottle.