If you only want to get a gravity boost from Jupiter and Saturn (like V1) I wonder if you wouldn't have to wait as long, say, every 20 years instead of every 17

If you only want to get a gravity boost from Jupiter and Saturn (like V1) I wonder if you wouldn't have to wait as long, say, every 20 years instead of every 176? https://voyager.jpl.nasa.gov/mission/timeline/#event-a-once-in-a-lifetime-alignment https://voyager.jpl.nasa.gov/mission/timeline/#event-a-once-... But you'd still have to fly for ~40 years to get to where they are now, and they'll keep on flying during those 40 years.