Filing O-1A and EB-1A at the same time — logistics I didn't expect

Ended up pursuing both simultaneously (O-1A through my employer for immediate status, EB-1A self-petition for the green card path), and wanted to share the coordination overhead that wasn't obvious going in. The evidence overlap is real, but the two petitions still needed to be built and filed as genuinely separate documents, with separate attention to each classification's specific framework — I couldn't just reuse one petition's structure for the other, even with substantially the same underlying evidence. Reference letters needed light tailoring for each (the audience and standard being addressed differ slightly). The part that actually surprised me: managing two sets of deadlines and two attorneys' (well, one attorney and one company immigration team) communication styles and expectations at once took more organizational overhead than either process alone. If you're doing this too, I'd recommend a single shared tracker across both, even though they're legally separate processes — keeping them mentally unified helped me not drop a ball on either one.