The reconcilement between the opinions regarding that which was last revealed from the Qur’aan is simple. It is said regarding Soorah AN-Nassr and Soorah Baraa’ah that they were the last Soorahs to be revealed completely. As for the last aayahs, those who had the opinion they were the aayahs about usury, they are correct for this until the end of the page, that is, Allaah’s Words,
وَٱتَّقُوا۟ يَوْمًۭا تُرْجَعُونَ فِيهِ إِلَى ٱللَّه
“… and fear a Day when you will be returned to Allaah.” (Al-Baqarah 281)
This, altogether, they would be the last aayahs. However, if we look at the last aayah on the page, then the other opinion joins in, that the last revealed aayah was,
“… and fear a Day when you will be returned to Allaah.”
In any case, there are many opinions, and this is the most popular.