[ryanfitz]

You were probably already "gone" once HR contacted you in June. HR's job is to protect the company, at no point were they concerned with improving your work relationship with the other employee. However, they were concerned with making sure you couldn't sue Google for wrongful termination. They gave you 6 months notice, followed up with you a few times, tied up any lose ends and then let you go.

While I do think you were already gone, it sounds like you handled things horribly during this 6 month period. You should have cut off all contact with the other person and started job hunting.