The context is a course scheduling and the process in creating one: course scheduling. I have looked up, that schedule is typically used American English and timetable is typically used in British English, is that correct?
Then my question would be, how would a native speaker experience it when both terms are used in the same context? Because currently I have the feeling, that I could express myself better when using both.
Schedule seems to be the overall structure, the whole course schedule of the university for example and timetable, more as the timetable for this week: Monday to Friday.