I understand both pilots are Indian Citizens and can only assume English is their second language.
Somebody sounding like Peter Sellers in
The Party had his COM2 on area whilst talking on the CTAF (I assume) recently. His riposte to the jibe I didn't hear, "I am talking English, it is the only language I know!"
This is English, and then there is Engrish, and there is a lot of variation. I know my accent is difficult for Septics. Asians don't seem to have any trouble as long as I don't talk too fast, or slowly...