Apple usually announces like 3-5 new products, each in a distinct market / audience fit. Arm announced one product for one customer.
But sometimes two long discussions ensue on separate days for one event/product/announcement, if it's big enough. Often the discussions are merged later on. No big deal.
When the two submissions aren't the exact same link, it becomes a subjective question as to whether they're similar enough to count as a dupe or not. They aren't automatically always a dupe just because the overall general topic is the same, but nor are they automatically considered not a dupe just because they're not identical.
In this case the consensus (that I agree with) certainly seems to be that they're similar enough to be considered a dupe. Though that doesn't force the moderators to have to treat it like a dupe and merge comments.