well, high frequency trading took me an hour. Capital Market Expectations took me like 6. FI yield curve dynamics took me like 10. Taxes in a global context probably 8. Risk mgmt with options maybe 2 hours. Some I did twice (NEVER less than twice), others I did 5 or 6 times - looking at you, currency management and capital market expectations.
Does this answer your question? Hint: it shouldn’t