Originally Posted by
fotographer
What is your final stop?
Do you have an Indian Visa?
If you are planning to stop in Mumbai for a short time, you will have to clear customs etc... that depending on the time of day or night, can take a while
even in the first/business line, because no one checks tickets and that is the first line in the custom hall
The OP is not inquiring about connecting in India. He is asking about the possibility of having a long connection in Europe, en-route to his final destination of BOM.