Shiny blue metallic, undulating, object (spherical then oblong then spherical then oblong) moving across sky

At first I thought it was a helium balloon but it didn’t go up or down or get smaller; then I thought it was a drone but it flew in a rhythmic pattern, twirling slowly then holding its shape then twirling slowly again, over and over while reflecting the sunlight in between the intervals from shiny metallic blue to silver, repeating this motion almost like a wave as it moved; when I realized it wasn’t a balloon or drone or plane, I yelled out loud “It’s a UFO!” and turned to get my cellphone located 15 feet away. Like that, it was gone. I said out loud “What the heck! Where did it go? This doesn’t make any sense, it just disappeared!” No chance to take a picture. Though several minutes later I saw a strange airplane that had a wide fuselage with orange on the sides flying towards me from the opposite direction so I tried to capture it but the sun was too bright, instead I got a photo of something else, unbeknownst to me, that my son later pointed out when I told him about the UFO sighting. Photo attached. Could the two objects be related, I wonder?