2 clematis or just different size flowers?!

loli

I moved into my house and after a year this clematis popped up and had been growing more vigorously each year. There’s 2 different flowers growing on it but I cannot figure if it is 2 different clematis or if it is just different flowers on the one. As there are bigger purple flowers on the top and then smaller pink tipped flowers below. Looking at the roots I can’t see separate plants but lots of stems come from the same area.

K67

Same plant. Possibly more sun on top half.

Lyn

Some Clematis have a 2 season flowering time, as it was a cold Spring it may have delayed the Spring blooming, then with the hot weather the second flush has come early, thus two different flowers together. 
From the picture I can’t see any difference on yours. 

loli

Thanks for the answers! It does normally flower sooner in the year and also does get more sun on the top I suppose