No... from the article "The commissioner’s office then confronted the Red Sox, who admitted that their trainers had received signals from video replay personnel

No... from the article "The commissioner’s office then confronted the Red Sox, who admitted that their trainers had received signals from video replay personnel and then relayed that information to some players — an operation that had been in place for at least several weeks." The video replay personnel are sending messages, via Apple watch to the trainers.