WindowCount
groups the notifications of the source sequence into new observable sequences containing the number of elements specified in the Count property. The overlap between the elements in each window can be controlled using the Skip property.
If no skip value is provided, the windows will be strictly non-overlapping, with a new window beginning when the previous window ends. If the skip value is less than the specified number of elements, windows will be overlapping, with a new window created every Skip
notifications. Finally, if the skip value is greater than the specified number of elements, there will be a gap between each window where elements from the source sequence will be dropped.