Broad channels like 40Mhz on 2.4 and 160 on 5/6Ghz are only useful if you have absolutely no interference and congestion from other people's Wi-Fi and your own devices (like smart homes stuffs).
These increase total bandwidth throughput, but does not improve performance in terms of packet delivery, latency and jitter in any way. (Considering, you do not have a billion devices connected to download/upload at peak simultaneously)
Looking at this, you'd laugh since in enterprise we stick to 20mhz for 2.4, 40mhz for 5 and 80+80 (most cases just 80) on 6ghz.
Although, I'm not informed of what this “smart connect” feature is on Airtel provided Wi-Fi but knowing it is ISP provided then it probably very basic in terms of configuration.