They may not have gotten everything, but you appear to deny what Jesus said to Peter:
Matt 16:17 : Jesus replied, "Blessed are you, Simon son of Jonah, for this was not revealed to you by man, but by my Father in heaven.
Not at all. Christ told +Peter that he had an epiphany. But obviously +Peter did not realize what he said. None of the Apostes at that point treated Christ as God Incarnate; they did not pray to Him; nor did they worship Him.
Een after the Resurrection, just before His Ascension, not all believed, as Mat 28:16-17 tells us
In the Jewish mindset of the 1st century Middle East, it was unthinkable that any man, let alone a poor carpenter, could be God, or that it is possible for man to be God.
They also could not find any support of this in their scriptures. Jesus does not fit the "profile" of the Jewish meissiah. Out of seven, He fulfills only one—being Jewish.
Finally, calling someone divine other than the invisible God was punishable by death. Christians could not, even if they wanted to, preach divine Christ.
So, it was a leap of incredible faith for any man in those days in Israel to see Him as God-Incarnate, as one Person, fully divine and fully human, including His own disciples.
It is only later, towards the end of the century, that His divinity becomes fully revealed, which is why +John wrote his Gospel so late. Writing a Gospel that emphasizes Christ's humanity as a Jewish messiah was already covered by the other three Gospels. The revelation of His full divinity was the next step in seeing through the looking glass, dimly, and discerning what was in front of them all along.