This and other news sources say Terminal 2 at Bengaluru KIA (BLR) will only handle international flights from now on, while Terminal 1 will handle only domestic flights.
https://www.indianeagle.com/traveldi...ru-airport-t2/

I guess this means that if you're connecting international ↔ domestic you will have to transfer between the terminals, unlike in Mumbai where in many cases you can stay in one terminal.