IOTL, there was a Soviet offensive aimed at Estonia launched at the end stages of WW2, in february 1944. The Soviets hoped to gain a beachhead to the Baltic sea, to supplant their operations aimed at the Baltic states and Finland.
However, the Axis forces in the area presented stiffer resistance than the Soviets expected, and the German-Estonian forces held their ground. This also had effects over the Continuation War in Finland, and allowed the aforementioned Germans to form the Kurland pocket, which would hold out till the end of the war in Europe.
But what if the Soviets had managed to dislodge the Germans from Narva already in early 1944?
However, the Axis forces in the area presented stiffer resistance than the Soviets expected, and the German-Estonian forces held their ground. This also had effects over the Continuation War in Finland, and allowed the aforementioned Germans to form the Kurland pocket, which would hold out till the end of the war in Europe.
But what if the Soviets had managed to dislodge the Germans from Narva already in early 1944?