eVisa validity is 120 days. but once you land you can only stay for 60 days. what you are saying is possible on paper, but highly risky to get both done in 60 days. you'll need to apply first thing when you reach. also, you will have to wait almost till the end of your trip to get the OCI in hand. what if you dont get by the end of 60 days?I am curious,
What is the max validity for eVisa (i.e. max allowed time you can stay there). What if we get eVisa then visit there and surrender passport as well as apply OCI at FRRO (I have heard both are possible there) in India? Is it technically possible for someone who wants to stay little longer?
if your eVisa ends and you receive you OCI after few days, then you are staying illegally for those few days. As there is emmigration check done while leaving India, the officer might come to know that you were staying illegally. I dont know what exactly the risk would be. Maybe others can throw some light.