Chris orbed into the attic when he first arrived in the present yet it shows him going through a portal in the attic in the flashback.
Bianca wounds Chris in the stomach, but in the next scene the wound is on his chest.
In the future flashback Chris has the hairstyle he has currently in the series yet his hair was short when he came back at the end of season 5. Also his clothes are different than the ones he was wearing when he arrived. The episode implies he arrived in the present immediately giving him no time or reason to change clothes or cut his hair.