Deneb says that by using Kintaros' fur to clean DenLiner's windows, he can even reach the high ones, but DenLiner only has one row of windows.
Hana says that Kotaro can't transform without Teddy, yet his earlier transformation on DenLiner didn't involve Teddy at all; he used the belt and pass as Den-O has always done, with Teddy becoming his weapon afterwards.
During Climax Form's battle with the Ghost Imagin, the DenGasher Sword Mode appeared to glow green, even though Deneb was not part of the Climax Form grouping (although he was present to witness the fight).
DenLiner is apparently unable to move without DenBird in the cockpit, but it has never been affected before.
Unusually, Kintaros says "Dynamic Chop" before performing the attack. Normally, he says it afterwards.
According to Hana, the Fangire have only recently appeared, presumably just after the defeat of the Imagin at the end of Den-O. However, in Kiva, the Fangire are shown to have been active for at least 22 years.
It is unclear what difference fermenting underground would have on varnish that was sealed inside a glass jar.
Apparently Urataros can drive; he is seen getting out of the driver's door of the DenLiner Police van. When he learnt or whether he actually has a license is not mentioned, although as the existence of Police DenLiner appears to be public knowledge, he may not have had any problems.
This is not the first time that Owner has had a Rider Pass taken from him. In Kamen Rider Den-O: I'm Born!, Gaoh took his Master Pass when DenLiner was hijacked.
Strangely, Police DenLiner's headquarters on DenLiner seems much wider than train itself, especially when compared to other rooms such as the dining car.
How Negataros and the other Imagin in this movie survived Kai's death and the destruction of the Imagins future time in the Den-O finale is not explained. Owner describes Negataros as a 'stray'.
Although Negataros stole the spare Rider Pass from Owner, it is unclear where he got the Nega Den-O belt and Nega DenGasher.
Sieg says that Liner Form is the form of Ryoutarou fighting alone. However, he forgets to mention Plat Form, which Ryoutarou also uses without an Imagin partner.
Sieg tells Hana that he possessed Ryoutarou in 2000 because they came to see him in the past. However, as he was dropped off in 1997, he could visit them at any time as he would still be living in their present, 2007.
Owner says that God's Line allows travel back tens of thousands of years, something which other time trains such as DenLiner and ZeroLiner cannot do. However, when Yuuto was collecting Ryoutarous for the Climax Scene, ZeroLiner travelled all the way back to the dinosaur era, at least 65 million years in the past.
It is not revealed how Gaoh came into possession of the Kamen Rider Gaoh belt. Given that it shares his name, he may have built it himself.
It is unclear why Momotaros didn't just use the Den-O belt himself to activate Sword Form instead of possessing Kotarou as the other Taro Imagin have done.
As Momotaros and Urataros fight in the ally, the overhead shot shows Momotaros kicking over a burning bucket, but the shot of Ryutaros and Naomi immediately following this shows the bucket back in it's original upright position.
Although KingLiner was briefly seen dropping Ryoutarou and Yuuto off in 2007, it was neither seen before, after or mentioned and played no further part in events.
Somehow, the Kai in 2007 knew that the Albinoleo Imagin would be emerging from his body at that specific time and helped to open the time portal. Previously Kai and all other Imagin contractors have not done this (as the Imagin emerges into a time from before they formed the contract in the first place).