Is density typically fully regained after chronic telogen effluvium or acute telogen effluvium?

I am hearing conflicting information on this. Once CTE, TE or acute TE have fully subsided, provided no underlying condition exists like AGA or other condition that may cause hair loss, does hair typically return to its former density, or somewhat close? Or would the hair regain only partial density over time? Or is this dependent on the individual? Are there any data or studies that shed light on this question?