Water hose hookup on fresh water tank/black water flush port

I have a question regarding the fresh water attach point on our Winnebago Brave.  When dumping the black/gray water tanks prior to departure, can I switch the fresh water hose to the black water tank flush port, or do I need two separate hoses?

How To Use an RV Black Tank Flush - Camping World Blog

How To Use an RV Black Tank Flush - Camping World Blog

Different take on the black tank flush plumbing - iRV2 Forums

Flushing black water tank with outside shower connection. - Forest

Newbie Water Tank & Black Tank Flush Question - Water and Holding

A.A Fresh Water Tank Accessory Hose Connection Kit

How to Fill Your RV's Fresh Water Tank - HAPPY CAMPERS

RV Exterior Spray Port Hook-Up Connector - RecPro

How to fill the Fresh Water Tank in your RV

Understanding and Emptying Your RV Holding Tanks - Airstream

Black Water Flush - Forest River Forums

Black Water Flush - Forest River Forums

RV How-To Guide Black Sewer Tank Flusher - RVs Unlimited

RV Black Tank Flush System – All You Need to Know

Outboard Flushing, The Right Way

Flush King RV Holding Tank Flush Valve

RV Black Tank Flush Valve, with Master Blaster Tank Wand and Hose Kit Bundle to Keep Your Blank Tank and Sensors Ultra Clean, Waste Water & Sanitation - Canada

External black tank flush fitting b/o - Technical Tips and Tricks - Escapees Discussion Forum

Camco Tornado Rotary Tank Rinser Features a 6-foot Hose, 360-degree Rotating Head and High-Pressure Nozzles (40126)

2500 Gallon Water Storage Tank - Black