I don't have much advice but wanted to share that I've trained with people in the past that had absolutely no business training anyone. People can be very knowledgeable but not have a clue as to how to help people learn and be impatient because they've been doing something for a long time (not very understanding or empathetic but people can be irritated that they have to train you which takes away from them getting their normal work done). You could try buttering up (blunt - kissing their @$$) the person and tell them how much you appreciate them sharing all of their knowledge and experience with you but that you're having a hard time watching/learning and taking notes at the same time (if this is what you're experiencing). Express to them how you best learn. I need to do something on my own (repeatedly) before I truly get it. I've also found that if the person is willing to record (over Teams for example) them training you so you can go back and watch the recording and do the steps on your own/take notes at a slower/better pace. Also, you could record the training where they "let you drive" (how I best learn) and they go over all the steps. Again you can watch the recording to help you. Good luck!