What would happen if combining both Cross Vine and Trumpet Vine together on the same wall?

I think I remember reading that the Cross Vine is more evergreen and blooms in Spring and early Summer , whereas the Trumpet Vine is not evergreen and blooms second half of summer into fall?



If so, how would they go together?



And since they look so similar , there wouldnt be much of a difference would there?



Thanks for your answers!

What would happen if combining both Cross Vine and Trumpet Vine together on the same wall?
It would work fine . They're both fast-growing, and about the same size. Have done the same with Wisteria and Akebia , and Clematis fargesoides %26amp; Clematis terniflora , for the same reasons you mentioned .
Reply:im so glad i stumbled on to this question... something ive never thought of doing.... for me this is a good question!
Reply:You, would get a cross dressing trumpeter.LOL.