All these are good really points from chatGPT. (would you mind sharing your prompt for this query? or what information did you input in chat GPT. TIA.)
I want to add my experience:
My friend was in India when his OCI was delivered at home. There was no one to pick up. So delivery guy stick a note on door mentioning that you have a package. please pick up at X location... bring one piece of Id + this notice ... etc... all instructions.
I went to my friend's home --> pick up notice --> went to pick up location --> showed my friend's ID --> he let me pick up OCI on behalf of my friend.
But this can vary... depends on how strict or easy delivery people are at that particular location.
I think if no one can pick up OCI, then they will send it back to BSL.
good luck.