Harry can return to the present via the long route, if necessary. It doesn’t appear that anyone bothered to check for extra Harries in the morning, so he wouldn’t need to do anything more exotic than hide in the washroom before the previous Harry iteration got there in order to fool the Professors.
Harry can return to the present via the long route, if necessary. It doesn’t appear that anyone bothered to check for extra Harries in the morning, so he wouldn’t need to do anything more exotic than hide in the washroom before the previous Harry iteration got there in order to fool the Professors.