Only by the idea, Is it possible that the architect can finish the interior designer work?

Agree with Hasnaa Abohomos Architecture and Interior Design is really interrelated and intersected disciplines, both has the same concepts. and the only difference is the level of detail. Architecture can do well in interior design but has a limit cannot exceed.

Yes because architect engineer is also interior designer

yes of course but, but the designs will be less artistic. As well as the designer can finish up the architecture work..

Yes he can as the the interior is something has to do with taste followed by some rules for the interior space. so basically anyone can do interior designing but not anyone has good taste ;)

yes, sure