Still fairly new to the Profilux so please bare with me.

I have 2 x Tunze 6105. I got the Tunze Cables 1 & 2. I know where to plug them in.
I see you can use also both pumps on 1 channel with the splitter cable.

What is the advantage of getting the splitter cable?

Do I need it or can I achieve following examples with each pump on his own port?

I want to create different flow patterns during the day.
Sometimes both pumps run at the same speed, sometimes 1 more speed as the other.
Also would like to get the pumps to alternate. Pump 1 off while Pump 2 ramps from 10 to 50% and then shuts off then Pump 1 ramps up while 2 is off.

Thanks for any help