Worth being aware of the UCSF trial [1] that did not find that intermittent fasting (16 hour fast / 8 hours to eat) reduced weight. A bit concerningly, they did find that there was significantly reduced lean mass in the intermittent fasting group compared to the control group (a small but statistically significant effect).
I recall reading that this is true, but the narrow eating window is believed to contribute to ease of adherence. (No citations on hand, sorry.) My dieting successes have come from both a narrow eating window and lower carb (basically less sweet fruits, and non-root vegetables).
Last time I adhered for 40 or so days I hit the wall hard (approx. -10 kg). Zero energy, and miserable. I wasn't sure if it was electrolytes or if I finally found the keto flu (seems a bit late though, and didn't pass in 3 days). So I abandoned ship and have since had no trouble putting 5 kg of fat back on my body. Time to restart!
This study by its own admission has no access to information on the amount of energy consumed by either group. It is possible to eat as many calories in one sitting as it is across the day; therefore, it is possible that people ate about the same calories/perhaps regulated by homeostasis.
1 = https://jamanetwork.com/journals/jamainternalmedicine/fullar...