Answer: The connection remains. If the student is on the level of attainment, he understands and maintains this connection. Depending on the level that he is on, there is virtually no difference whether the teacher is physically next to him or not.
But if it is a regular teacher, like a physicist or a mathematician, there is no connection whatsoever. And here, however, the connection continues and is not diminished by the teacher’s death. On the contrary, it grows even stronger and more purposeful, pure, clear, and bright.
From the Kabbalah Lesson in Russian 10/1/17