I have an android phone, can this phone connect to my iPad to use FaceTime.

There is actually, but you have to invited to join a call from an iOS device --> Join a FaceTime call from an Android or Windows device - Apple Support

FaceTime can be used only between Apple Devices.

SravanKrA:

I’ve heard, though I’ve never looked for it, let alone tried it, that there is a Web interface to FaceTime, that can be used by non-Apple devices.

Did I misremember, or misunderstand?

SravanKrA! Where have you been, we were worried.