IMO, the rules are warning flags, not boundaries. I think it depends a lot on how you're writing it, but defiantly evaluate those first few chapters.
Check and see if you are really starting it in the right place. is what is there all setup or actual story? If it's setup you can probably cut a lot and work important information in the story in bits and pieces.
Or maybe it's more women's lit with a romantic story line. Is it following both characters and the relationship arc or is it here story while she's falling in love. If the hero isn't around for the first chapters at all, can the relationship really be the plot? I don't think this matters in terms of writing a good story, but when it comes time to market it, you need to know what you have.
The last thing i think you should consider is the purpose of those first chapters. When you look at what the scenes are accomplishing, the goal of them individually, does that goal and purpose move the story forward or prepare for the story coming? In a good romance, every scene should move forward, not reflect on the past or prepare for movement. You don't want to sit stalled, waiting for the story to start. The story will lack pacing and there will be nothing to compel the reader forward.
So, depending on how you want to market, what your goal is, how the story is structured and paced, yes, it is possible. Just make sure you are certain.