Neither are said to have gone to heaven.
at 2 Chron 21:12 it even has King Jehoram receiving a letter from Elijah many years after his ascent of the ladder. This does not mean that Elijah was still around but John 3:13 tells us that no one has ascended to heaven at any time. Where Enoch and Elijah went is not stated but I would say it was not heaven.
No, John 3:13 says: For no man has ascended into heaven, but he that descended from heaven, even the Son of Man which is in heaven.
Now Christians claim that Jesus His Pre-Eminence is the Son of Man. But HE has said the Son of Man is in heaven, while HE is in the earth.
Elijah is the Son of Man, who descedend from the fathers Bososm, and ascended into heaven.
Enoch, also descedend from the fathers Bosom, and ascended into heaven.
What was being revealed here, is that if you are not a descendant, meaning that GOD sent your Spirit Being, programmed in the soul, into the physical body that you picked up in your biological mothers womb, then you are not a descendant, you are an ascendant, and cannot enter into heaven. See the parable of wheats and tares Matt 13:24-30
The Proof is in Mark 9, where Moses who died, and Elijah who never died, both went to the Mountain of olives, transfigured, and Jesus His Pre-Eminence transfigured. And the proof of that is Aposltle Peter saw them as Equals, and said: Let us make three tabernacles; one for thee, one for Moses, and one for Elijah, is proof they were in heaven, with their transfigured bodies. And then we found by Jude, that Arch Angel Michael came for Moses, which means he was not buried. Though he did taste death, he was not buried. Jude 1:9
Enoch, it was only written that GOD took him. Then saul gave his own interpretations on that. Enoch transfigured in life, but it was hidden from us. And then Nimrod tried to build a tower that will reach heaven. Why? What was he trying to achieve? Nimrod, was not a servant of GOD,Nimrod was a wizard, a hunter of souls who married his own biological mother trying to create a special child that will stand against the seed of the woman said to crush them.
So wheredid Nimrod get the idea to do this? And they wrote wrongly, that it moved GOD to now confuse everyone, giving them different tongues and languages. A Blaspehemy against the Character of the Most Holy Spirit of GOD. For GOD is not an author of confusion. So there is much more to that story. But, why did Nimrod try to build it, what was he trying to achieve?
Nimrod built 4 cities: Babel, Erech, Accad, Calneh in the land Shinar. Why?
Look at the journey that Moses and Joshua took to the Promised Land, and also the Journey sign posted in 2 kings 2 by Elijah.
Gilgal, Bethel, Jericho, Jordan. 4 Again.
Then look at the systems of babylon that was also:
Babylon, Medes Persia, Grecia, Rome.
What Nimrod was trying to achieve, was to build a tower that will reach heaven alive, which the building of it begins in babel, because he attained teachings and messages coded about the kind of body that is 60 ft tall, that when that body is built, you can reach heaven alive, and that is transfiguration. That is why they said things like: we must burn the bricks thoroughly. Compare that to Moses talking about burning the fat of the sacrifice. But Nimrod,and his cohorts (unholy alliance with tare Cherubim/Seraphim, and Angels) could not understand the nucleus, the hidden Revelations in those teachings. They saw (Speaking of lucifer and his cohorts) Enoch transfigure,and tried to replicate it. But those teachings were sealed; written in Prophetic Language, and that landed them in confusion.
At that time in the earth, there was one language, which was edens language, and the Cherubim and Seraphim, Angels also spoke Edens Language, but in their own tongue. So GOD pluralised that Language, so that they could not conspire, communicate with celestial beings anymore, and so that every man would spread accross the earth, for it is the WIll of GOD that they spread and populate the earth.
Enoch, And Elijah, the Great Prophets, transfigured in life, without dying at all.