In these ayat, the companions of the Fire and the companions of Paradise talk to one another.
And the companions of Paradise will call out to the companions of the Fire, "We have already found what our Lord promised us to be true. Have you found what your Lord promised to be true?" They will say, "Yes." Then an announcer will announce among them, "The curse of Allah shall be upon the wrongdoers." -- Qur'an 7:44
And the companions of the Fire will call to the companions of Paradise, "Pour upon us some water or from whatever Allah has provided you." They will say, "Indeed, Allah has forbidden them both to the disbelievers." -- Qur'an 7:50
[Who will be] in gardens, questioning each other About the criminals, [And asking them], "What put you into Saqar?" They will say, "We were not of those who prayed, Nor did we used to feed the poor. And we used to enter into vain discourse with those who engaged [in it], And we used to deny the Day of Recompense Until there came to us the certainty." -- Qur'an 74:40-47
(See the section Conversations between the people of Paradise and the people of Hell at IslamReligion.com.)
This raises the question:
Question: Can people in heaven and hell ordinarily communicate with one another?
If people in heaven and hell can ordinarily communicate with one another, it raises some bizarre problems, e.g., imagine talking to a close relative who is in hell; difficulties communicating while being punished without respite.
So perhaps these ayat are meant to be a metaphorical I told you so. And if they're taken literally, it may still just mean this is a once-off case.
I don't know which it is though.