Castsequence with priority list

Hello guys! Is there any difference in how the “/castsequences” are executed when using priority list?
I know that, for example:

/cast a
/castsequence b,c
/castsequence d,e
/cast f

GSE will execute, using sequential, a,b,d,f,a,c,e,f
But how it will execute if I use priority list?

I would suggest reading:

It covers exactly what you are asking.