Keep in mind that the drip is connected where the nails go through at each joint so it is one continuous length.
That is an invalid assumption and should not be taken as fact. The only way to guarantee that a drip (more properly called a lead or a downspout) or a gutter is one continious length is to actually electrically connect the sections together with screws and star washers - at the very least.
The joints made by the nails are excellent RFI generators.