Seeking a noun for "a condescending, didactic, long-winded speech or soliloquy"

• Looking for a noun
• Intended meaning: “a condescending, didactic, long-winded speech or soliloquy for the purpose of one’s own self-aggrandizement”
• Prefer it not to end in (-tion)

Below are my initial attempts starting with the closest match.
Connotations in parentheses.

Closest:

1. Bloviation (long-winded, inflated, empty, pompous, arrogant)
2. Pontification (pompous, dogmatic)

Not as good:

1. Diatribe, Harangue, Tirade (overemphasis on anger and criticism)
2. Gasconade (overemphasis on boastfulness as opposed to condescension and didacticism)
3. Jeremiad (overemphasis on complaint)
4. Prattle, Chatter, Witter, Babble (overemphasis on triviality)
5. Bombast (pompous, grandiloquent)(refers to the manner of speech not the speech itself “Bombast made the speech intolerable” – not “She delivered a bombast”)

Solution 1:

You can consider rodomontade.

A vainglorious brag or boast; an extravagantly boastful, arrogant, or bombastic speech or piece of writing [OED]

An example from OED:

1862    Thackeray Adventures of Philip I. viii. 144    Phil used to bore me after dinner with endless rodomontades about his passion and his charmer; but my wife was never tired of listening.

Etymology of the word from Etymonline:

1610s (earlier rodomontado, 1590s), "vain boasting like that of Rodomonte," character in Ariosto's "Orlando Furioso." In dialectal Italian the name means literally "one who rolls (away) the mountain."

Note: Rodomontado is a synonym and partly from Italian rodomontata and partly an alteration of rodomontade, after -ado suffix.