In Jainism, “Bhāvanāsamvāsah” is not a standard common phrase I can confidently explain as a fixed technical term. If you mean Bhavanavāsī devas or Dev lok, then the strict Jain understanding is:

• Devas are not humans.
• They are souls born in heavenly/ celestial states because of their karma.
• They do not live in one single “heaven” together with all beings.
• They exist in specific realms, classes, and abodes according to their type and karma.

So, to answer your question strictly:

Yes, devas can be with other devas in the same celestial abode or region, but not like humans sharing one mixed place casually. It is a structured heavenly existence, not a free-for-all common city.

Also:

• Humans do not normally meet devas physically in the same way we meet other humans.
• In Jain cosmology, each being is in its own gati / realm / body-type, according to karma.

If you want the strictest one-line answer: In Jainism, Devlok is a karmic celestial realm where devas live with beings of their own class and abode, not a human-like place where everyone shares one common world.