However, there is an issue if either controller is too heavily obstructed, and the left-side controller definitely appears to have a weaker connection than its sibling. Each Joy-Con loses signal once covered completely with your hands, or put behind your back. Even at two metres, the left Joy-Con's connection starts to break up when held obstructed, leaving a choppier circular movement on the calibration screen. Keeping it in that position, that progresses to a more erratic signal at three metres, and practically no connection at six metres. But pointing the control forward again, it works again immediately.
By comparison, the right Joy-Con doesn't show these symptoms to the same extent, but they are there. The break-up in signal kicks in only slightly at five metres in that case, and again, only with the control held behind your back. Even swapping hands to account for a difference in angle, it's fair to say the left Joy-Con has bigger issues when obstructed.
So both have signal cuts when pushed, and the left one's more prone to it - but is it really an issue? Well for the majority of gameplay, you should be absolutely fine. The signal strength is generally resilient, but not as strong as a regular gamepad. Being held in small, enclosed spaces, or pressed against something obstructing its path does it no favours. The fact there is a difference at all between the two Joy-Cons here is curious though. After all, the right Joy-Con has only two spec differences, in its extra infra-red pointer and NFC chip. Besides this, the two are really identical, and it's not enough to pinpoint exactly where the difference comes from.
