Smart meter query

I had smart meters installed by Siemens recently. The meters are located either side of a garage - so probably no more than 2.5 meters apart. I noted on my IHD that the electricity was displaying - not the gas. I have since been told that the meters are too far apart and that I will need to wait for a signal booster for the gas meter to have it operating in a “smart” mode. I feel conned by Bulb - the meters are in clear line of sight of each other - no walls etc between them and I cannot understand why the current smart gas meter - I am assuming it is one - can’t talk to the electricity meter. So either the engineer has made a mistake during installation or there is some other fault. Bulb - you need to sort this out