I'm an Indian passport holder with a UK Short Stay "C" visa issued in the US. My visa does not have a BIVS endorsement. I understand that I can travel to Ireland without an Ireland visa, as long as I land in the UK first, using the the Short Stay Visa Waiver program.

Is there a minimum amount of time I need to spend in the UK before heading over to Ireland?

My preference is to land in LHR, complete immigration, and take a flight to DUB without leaving the airport. I want to make sure that there is no issues with that.

Thanks in advance for your help.