Can you extend a DTV visa at Central Festival Chiang Mai?

Extending a DTV visa at Central Festival in Chiang Mai appears to be quite challenging, with many users suggesting a 'border bounce'—leaving the country and re-entering—as the simplest solution. Most commenters advise against trying to extend the visa in-country due to difficulties, mentioning that it is much easier to leave for a short trip and return. Additionally, it was noted that only one officer in Chiang Mai handles DTV extensions, making the process more complicated.