Try this
- Name the interruption and ask whether the person wants to resume.
- Let them choose the point to return to. If the earlier question no longer matters, do not insist on finishing it for the sake of completion.
A worked example
“We got interrupted. Would you like to pick that up or leave it for now?”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Let the person summarize where they want to restart rather than repeating your remembered version.