There is nothing to fear in the dreaming. Only that which we bring with us. The dreaming takes us forward and the dreaming takes us back.
-Dukhat
This episode contains examples of:
The Atoner: Delenn has regretted starting the Earth-Minbari War, and has been trying to make up for it ever since.
Awful Truth: Callenn clearly regards the fact that many modern Minbari have human DNA as this, and Delenn is able to use it to leverage an agreement where he approves her marriage as an ancient Minbari reconciliation custom in exchange for her keeping it to herself.
Delenn mentions the Minbari custom of a female watching her chosen male sleep. She names the time on the White Star as the first night, and the time in his quarters as the second.
The Minbari realize tragedy is about to strike when they see Soul Hunters closing in.
The Clan: Delenn is summoned by hers to explain why she is going to marry a human. Lennier is from another clan, but he accompanies her anyway.
When Ivanova goes to the Drazi...Party? War? Whatever it is, she's wearing the Green Leader sash she got in The Geometry of Shadows.
When Dukhat takes Delenn as his protege, he says, "I cannot have an aide who will not look up. You will be forever walking into things." She said the same thing to Lennier when he arrived.
Don't Ask: Ivanova when she emerges from the Drazi party.
Easily Forgiven: Lennier forgives Delenn for starting the Earth/Minbari War, despite losing family on the Black Star. He doesn't seem to be one to hold a grudge.
Little Black Dress: Delenn causes Sheridan to forget what he was thinking when she appears in it.
Loophole Abuse: Callenn's solution makes use of an all-but-forgotten custom from when Minbari still fought wars with each other to approve Delenn's marriage to Sheridan.
Moment of Weakness: Delenn, consumed by rage and grief over Dukhat's death, was asked to cast the deciding vote for the action to take after the attack by the Earth vessel.
My God, What Have I Done?: Delenn immediately regrets her enraged decision, but it's too late to stop a full-scale war.
Nice Job Breaking It, Hero: Delenn inadvertently starts a genocidal war when she votes to destroy the human ships.
Rewind, Replay, Repeat: The vision replays over and over in Delenn's mind until she realizes that the important part of the vision was what Dukhat was trying to tell her just before he died. She then goes back to The Dreaming in order to hear what it was:
Dukhat: There was a purpose to my selection. Your heritage—you are a child of Valen.
Secret Legacy: Delenn finds out she is descended from Valen, a.k.a. Jeffrey Sinclair, which means she's always been part human.
The Minbari in general during the war with the humans. As one of Delenn's colleagues tells her, they are "a world gone mad", and the fires of their madness cannot now be controlled; they must burn out over time.
Warts And All: Delenn fears that her standing with Lennier would be harmed from his knowing her involvement in starting the Earth/Minbari War. She's wrong; Lennier holds no grudge despite losing family on the Black Star.