You have to remember that the outside and inside antennas set up a interference with each other. If the inside antenna was that powerful it would interfere with the outside reception.
We have a Wilson with the candy bar inside antenna. We lay the phone / hotspots on or within a few inches and use Bluetooth for calls or WiFi for data to other data devices. The rv broadcast type larger antenna is measured in feet . .. the one I tried was like 3’ then useless. If you go with the larger home style room broadcasters I would think the “loop” with the outside antenna would be a major problem.
The other thing .. many times if the outside signal is strong enough the booster actually degrades the reception , at least we found that to be true so we leave it off 90% of the time unless we actually need it.
In short , no way you sitting at the outside table getting a boosted signal, it won’t work like that.