Okay! I just got done looking over the crossover in the Chrono SL-526.2.
I had in my phone photos I had taken of the Vento 820.2 crossover.
The components of the crossovers are absolutely identical in layout and every part number which is a little surprising given the Vento 820.2 is 2 (?) generations older than the Chrono SL-526.2.
This also supports my suspicion that the change to titanium was likely only cosmetic as you would expect a woofer with significantly different performance to require modification of the crossover.
I will get up photos before the end of the weekend. I have a pretty clean photo of the 820.2 crossover, but the photo of the 526.2 is compromised since I could not get in through the woofer to give me a good vantage point. However, the photo from the terminal plate shows about two thirds of the components and the rest I established using a flashlight and inspection mirror. I tried to get photos, but the port is only 1-3/4" wide and the camera kept focusing on the wrong thing (and I established a renewed appreciation for the human eye)!
However, I think when you see the photos, there won't be any reason to doubt that the Chrono SL (ceramic tweeter) is indeed identical to the Vento except for the cabinet!
I believe you believe you heard a distinct and significant difference, but the bottom line is we are not machines and if you expect something to sound better it usually will. This is called "expectation bias" and is why I set up where I can switch back and forth instantly in the middle of a note at the push of a button. It makes it easy to repeat/verify and pick out specifics. It is not perfect, but the best I can manage with a subjective evaluation.