The answer is obtained from the Real-Time Survey
You can take the cab from Hinjewadi Bridge, Bhumkar Chowk, Swar Gate, Pune railway station for Dadar
It will cost you around 300 - 400 bucks per head.
Also, you can book the Blah Blah cars from their app
The cab will drop you at Dadar station from where you can take the train to Bandra.
This is the most convenient way to reach Dadar/Bandra.
It will take around 3 hours to 3.5 hours.