As to why there are no more questions, it could be that, as in Habakkuk, the last part of the book is primarily God giving Zechariah a "burden" of a prophecy, while the first part was more of an "interactive" session with each vision.
Kuhusiana na kutokuwepo maswali zaidi, inawezekana kuwa, kama kwenye Habakuki, sehemu ya mwisho ya kitabu inahusisha kimsingi Mungu kumpa Zekaria "mzigo" wa unabii, wakati sehemu ya kwanza ihusisha zaidi "majadiliano" na kila maono.