Tough conversations are…well, tough. But not having them usually leads to even tougher consequences.
Project details are…well, detailed. But not diving into them over the course of a project usually leads to very detailed problems arising upon delivery.
Time spent learning takes…well, that takes time away from doing work (or anything else). If it is effective as learning, then it will not be directly productive and inevitably slows down immediate output. But the indirect benefits of time spent learning are necessary for any person or organization to evolve and attain better outputs for the time they spend doing anything thereafter.
Have the conversations.
Discuss the details.
Take the time to learn.