The western Allies and Soviets both actively took Germany, coming in from either side and meeting in the middle. They split the country because they were already there. The Soviet Union never really made it to Japan proper. They took over Manchuria and Japan surrendered ASAP to the US alone once it became obvious that the only alternative was to surrender to both powers later and likely be split like Germany.
It’s worth highlighting that this was the immediate impetus for surrender. The atomic bombs were basically non-factors.
The confusing alphabet soup of Wi-Fi versions got renamed. 802.11n became Wi-Fi 4, 802.11ac became Wi-Fi 5, and 802.11ax became Wi-Fi 6. Wi-Fi 7 is still in development so 6 is the best in-use version.