At the end of the previous chapter, the narration returned to Suta Goswami speaking to Śaunaka Ṛṣi and the other sages in Naimiṣāraṇya. Actually, the whole Bhagavatam is spoken by him, it is just that during the narration the focus changes to Sukadeva Goswami and Maharaja Pariksit, Maitreya and Vidura, or other speakers in different parts of the text.
It’s also important to remember that a few chapters ago when Maitreya described the appearance of Lord Varaha, he amalgamated the two pastimes, describing both the appearance of the white Varaha during the reign of Svāyambhuva Manu (the 1st) and the appearance of the red Varaha during the reign of Cākṣuṣa Manu (the 6th). The first appearance of Lord Varaha, in the 1st Manvantara was described in the 13th chapter. After that, the narration jumps in time to the 6th manvantara, with the description of Jaya and Vijaya being cursed and taking birth as two demons, and Lord Varaha, in His second appearance, fighting Hiranyaksa.
Srimad Bhagavatam #28: Brahma populates the universe