Make both photographs fit
Two Oregon farm photographs give competing explanations the same test: account for both views, including the wires, buildings and horizon.
What to keep in mind
These are separate scanned exposures, with no continuous motion record or measured target distance. The proposed suspension line remains an analyst interpretation.
Align the background
Compare the roofline, wires and horizon. Which changes could come from the camera position before you attribute movement to the dark shape?
Follow the outline
Mark the apparent edges and tilt in each exposure. What would a proposed nearby or distant object need to explain in both pictures?
Check a faint line
Can you distinguish a visible feature from a line suggested by enhancement? Record the uncertainty and what access to the original negative would add.