Child benifit impact on spouse visa extention

Hi
Im british passport holder.
Have child born uk also british nationalty .
Im claming child benift.

I apply visa extention
For my wife and daughter .
Flrm both are out side EU.

Does this child benift will impact on my wife and other daughter visa application .

Also
I apply visa 20 september 2020.
Give biometric 12 october 2020.
Any idea how long this visa takes.
Im still wating for visa.

No.