Augustus asked, trying to force his mind back to the original topic.

I appear to have strayed a long way from our original topic.

With an effort, I pulled myself back to the original topic.

She was grateful for the return to the original topic.

I smiled and went on with the original topic.

"We've wandered a bit off our original topic," Gabriel said.

Point of process means that the conversation has strayed from the original topic.

I said, for the moment forgetting the original topic.

But to get back to our original topic of conversation.

She hesitated, clearly wanting to return to the original topic.