I have an upcoming flight Haneda-London and I am looking at booking a feeder for this, e.g. Singapore-Haneda.

The two flights would be on separate tickets and this poses the following questions for me:

- How do I obtain my boarding pass for Haneda-London if I am unable to check in online? (Assuming the BP cannot be issued in Singapore because it is separate tickets, is there a transit counter airside in HND that can issue it for me?)

- I would like to travel with checked bags because it is a longer trip. But I understand that checking my bags through is not guaranteed even if both flights are Star Alliance, because of separate tickets. Has anyone found a reliable solution to checking bags through on separate tickets in HND?


Thank you very much in advance