My mother ( on B1/B2) and brother (on F1) are coming to the US in August. They have selected two routes. First: by Air India/Indian Airlines via Delhi and Second: by Thai/AA. Delhi route is convenient but my brother is afraid of Delhi route because he has heard in Nepal about authority in Delhi harrassing by asking/saying too many things like your visa is fake etc. Please tell me your experience. Give me suggestions. Also, does my mom have to check in her luggage in Delhi again while going back to Nepal? In addition, she will alone while going back and doesn't know english at all. Therefore, she is taking wheel chair assistance while going back.

Also, in BKK, there is only 55 minutes of time to change planes. Is it enough?

Thank you all in advance.