The angst thay can be milked from this AU.
Like, would Prowl be a good bond mate during Jazz's carrying or would he kinda be just as neglectful. Like,
"Dang, got my conjux sparked. Well, time to commit a war crime."
This also feels like putting poor Jazz through crazy amounts of stress. I can imagine him perhaps almost preferring to stay longer on missions because, while he misses his sparkling dearly, he grows to hate being around Prowl since they always argue.
I can imagine this is proabably more stressful for the kid, who almost never sees their sire even if they are right there, and the only time they see their carrier he's loki almost always injured and/or recovering from a mission and trying to not slime out their sire.
Everyone be suffering in this AU.
The only way I can see these things happening is if the sparkling is a complete 100% accident. Like somehow someway Jazz just doesn’t know he’s sparked. Perhaps Jazzs espionage systems prevented the myriad of warning signals alerting him of his carrying. Or maybe the sparkling itself was weak and dodged carrying detection. What if the sparkling just didn’t emit an EMF through the whole cycle?
And with Jazz being the medbay dodger he is, Ratchet couldn’t catch it either.
Maybe Jazz doesn’t notice because of the stress of his job.
Jazz and Prowls relationship before the sparkling was probably ’’’fine’’’ ( as in they were definitely an item but the war got in the way of making anything too official ) ( but also they’ve been together for so long that anything else is weird and foreign to them )
But the sparkling only brought out the worst parts of themselves. resentment works itself into the relationship and now they have to figure out how to overcome these new problems while also keeping this thing alive.
Jazz being sent on missions leaves most of the ‘’’parenting’’’ to Prowl who does not do relationships. I’m sure if given the appropriate amount of time to prep and work out a schedule things would’ve been better but it was not the way things panned out. Maybe they will get the hang of it? If Prowl puts forth the effort and Jazz gets the appropriate time and healing to put himself back together.
But who knows how long that will take … there’s a war effort going on.