Worf tells Picard about how he tried to teach his traditions to the stranded Klingons that he had recently rescued. At the time, he said that they had only been stranded for a short time, not that they were born and grew up there. The existence of their families was supposed to be a secret. It might also be noted that their being delivered to the Enterprise by a Romulan Warbird was never properly explained.
When Kahless walks into the holodeck to meet Gowron and the holodeck door closes (off-screen), the wrong door sound effect is heard. The sound effect heard is the "whish" sound associated with cabin and turbolift doors, not the heavy clunking sound associated with the much larger cargo bay and holodeck doors.