Be none the wiser
Definition 1 of 1
Pro Tip 1/3Idiomatic Usage
Used to express that someone still doesn't understand after an attempt to clarify. 
She explained quantum physics, but I was none the wiser.
Pro Tip 2/3Subtle Confusion
Suggests a subtle or slight confusion rather than complete ignorance. 
After the briefing, we were none the wiser about the company's real goals.
Pro Tip 3/3Mild Frustration
Can imply a sense of mild frustration or disappointment over not understanding. 
The manual was so complex, I was left none the wiser about the installation.