When a devatā approached the Buddha always stand aside, they do not sit down aside like other people.
bhagavantaṃ abhivādetvā ekamantaṃ aṭṭhāsi. Ekamantaṃ ṭhitā kho sā devatā bhagavantaṃ etadavoca
Went up to the Buddha, bowed, stood to one side, and said to him (Ven. Sujato).
Having approached, he paid homage to the Blessed One, stood to one side, and said to him (Ven. Bodhi) (SN 1.1)
Each sutta in Devatāsaṃyutta share the same.
Atha kho suppavāsā koliyadhītā bhagavantaṃ bhuttāviṃ onītapattapāṇiṃ ekamantaṃ nisīdi. Ekamantaṃ nisinnaṃ kho suppavāsaṃ koliyadhītaraṃ bhagavā etadavoca
When the Buddha had eaten and washed his hand and bowl, she sat down to one side.
The Buddha said to her AN 4.57
Then a certain cowherd went to the Gracious One, and after going and worshipping the Gracious One, he sat down on one side. While sitting on one side the Gracious One instructed, roused, enthused, and cheered that cowherd with a Dhamma talk (Ud 4.3)
What may be the reason that deities never sat near the Buddha?