Question about Insight

[Amaterasu]

Am I correct in assuming that having Enhanced Senses makes the process for Insight near flawless, because they're working in tandem? While if you don't have Enhanced Senses, it might take a couple seconds to comprehend the things you're seeing.

All that Enhanced Senses does is give you a radius within which you can sense people even if you can't directly see them. So basically you could Insight someone who's standing behind you or hiding behind an obstacle, whereas without ES you would need to be looking at them to do so. It wouldn't make Insight work faster or reveal more though.