OK, it's Neff fan oven, that makes it Circotherm which is unique to Neff
How does CircoTherm® work?
CircoTherm® works by drawing air in from the oven via a powerful stainless steel fan. It then heats up the air and forces it right back into the oven cavity through strategically placed ducts in the rear wall.
As a result, the desired temperature is reached much more quickly and is distributed more evenly throughout the oven.
Is that forced air? I dunno.
I can't believe that the rest of the world doesn't have something as effective these days but I've been using Neff for 40 years, so don't have anything to compare to, long term. The distribution of heat is excellent, cooking a tray puff pastry it will all cook equally (OK, almost equally) plus you can cook on multiple shelves simultaneously. Upshot is, the only time I don't use the fan is when you want intense heat on the bottom, eg pizza.
I'm also not sure I completely buy into the "desired temperature is reached much more quickly" - the fast heat up setting works well - not that much slower than gas, but otherwise it's sluggish, although far from as sluggish as some I've used.