how to find out the point of intersection with the help of this package between the polygon and the line

[BUGOVER]

[Daniel-FDS]

I am interested in this one as well, are there any possible further developments on it? I am working with aircraft flight routing, and I need to know the coordinates of where a flight path enters and exits a country, because the flight pricings differ based on which country you are in. I can make a polygon using the country's coordinates using data from [https://gadm.org/index.html], but I am struggling to find the coordinates of where the flight path enters/exits a country.

Thank you so much.