If your technology organization is anything like ours (and it might not be), you'll find that the recurring CTO Office Hours meet is usually a waste of time.
The questions submitted (either live or ahead of time) are a mix of jabs and fluff.
The jabs are usually pointed questions, that never get a sufficient answer during the meeting and the asker usually is asked to follow up directly via DMs that they usually never actually do.
The fluff are the questions like "When will we get better coffee in the office?", they somehow become the questions that get the most direct and to the point answers.
TL;DR: Just skip the meets!