It went well. But never heard from them again. The interviewer was respectful. His technical questions were a little bit broad, he expected detailed answers, which lead him to more questions etc...
His Question about updating Joomla theme dragged on. The simple process to update a Joomla theme ( like backup, update, if problems? investigate the differences, make sure you can go back to the working theme -to keep site alive) was not satisfactory.