Can a k8s cluster have more than one nginx ingress controllers for same ports 443 & 80 & both ingreses configured in an external LB F5.

We have a k8s Cluster with a nginx-ingress-controller. The cluster has sufficient CPM & Memory. The cluster hosts multiple applications each isolated in a separate namespace. There is a single nginx-ingress-controller IP from which traffic routes inside each of the application. This creates bottole-neck at the ingress and slows down request-response of the application.
In order to resolve this, we are thinking of adding one more (or two more) ingress controller, adding new internal-external ports 443-80 in F5 LB and take care label based routing to avoid conflicts.
Would be great, if this is possible. Can anyone who is expert please help to validate.

This is just a query