Thanks - clearly I didn't check if it'd been submitted earlier expecting it to be identified if it was. Was quite surprised to find that the submission took su

Thanks - clearly I didn't check if it'd been submitted earlier expecting it to be identified if it was. Was quite surprised to find that the submission took successfully - which I wasn't for something this old (even though I just came across it). Is there some time limit after which HN accepts the same URL even if it's been submitted earlier?