No. Like you've been told, this isn't possible.
I just thought I'd drop in and say that this used to be possible. When I started working in wireless telecomm in 1994 as digital was getting started, having multiple phones on the same number was sold as a feature. You could have your enormous, clunky, but powerful car phone and your huge, clunky and weak handheld (which looked like an old army walkie-talkie) on the same number so you could still get calls when you were out of range with the portable phone. Of course those were the analog days.
Carriers started to phase this out because cloning became so rampant. Cloning (in case some of you weren't around then) is when people would illegally reprogram an analog phone so they could place calls on someone else's account. In the digital era, we tied the number to the EIN of the handset and then the SIM card. And of course, the improved battery life and range of digital phones combined with increased coverage from more towers led to a decline in the need for a long-range car booster.