Excute A Extension From Other Extension/Script

Hello Guys

Question 1 :

We have 2 Extension

And w need to Excute/Run extension 2 with extension 1 .

its Possible ??!!

Question 2:

We have 1 Extension With 3 html panel ( index.html , page1.html , page2.html)

How Can Run/Excute page1 , page 2 in new Extension page or etc.