No, it's not currently legal in India to pursue a dual degree with MBBS (regular mode) and a BA (online mode) simultaneously.

A student can pursue two degrees: one in full-time physical mode and another in Open and Distance Learning (ODL)/Online mode.

Two degrees in regular mode are not permitted.

MBBS is a demanding medical program requiring extensive classroom learning, laboratory work, clinical rotations, and practical training. Pursuing another full-time degree (like another MBBS) alongside MBBS (regular mode) wouldn't be feasible or meet the program's rigorous requirements.

I hope it helps!