There is also a supposed conversation between him and Larry Page before he left. From what I've read, Larry supposedly knew a lot about the circumstances of his leaving, and what transpired in that meeting supposedly will undermine Waymo's position. He's being deposed, but apparently Uber is only allowed to ask him one question, which is odd.
Edit: downvoted as expected. I bet that 9 out of 10 people upvoting these stories and downvoting every comment that is in the least supportive of Uber or critical of Google are bitter Google employees.