Best practice to better control dialogues in I2V-Videos done with Grok Imagine

Hey guys, I love to produce short funny dialogues in short videoclips (6 seconds) based on images created inside Grok Imagine. I am curious if someone found a 'best practice' to better control the dialogues in videos, because after a lot of testing, these 2 main issues are still hard to overcome for me:

1. Make Grok understand to keep the dialogue order.
   E.g. I want Person A to talk first, then Person B, then again Person A, and finally Person B again, end of video.
   Unfortunately, Grok mostly messes this up although I tell him to stick to the dialogue order. Hence, Grok then makes them talk simultaneously the same text line or Person B says the lines that Person A should say and so on.

2. Make Grok stop to put messy captions/text overlays/subtitles over the video image. When you work with spoken language or dialogues in Grok Videos, then very often it puts exactly those text lines inside the video image like we know it from YouTube subtitles, Tiktok or similar. This is very annoying and all of my attempts to fix it via prompts have kinda failed until now. And it's even worse. Because by telling Grok to "Avoid" or "Don't show" or "No" "captions, text overlay, and subtitles" this seems to trigger their actual activation even more.

So far, I have to waste like 10+ attempts until the video kinda turns out fine with the correct dialogue order and without subtitles. Hence, I wonder, if someone found a way to better control Groks behaviour on this topic?