No, you need at least 24 hours to share the same product
Note: due to a change made by Twitter, you can not be sure that the tweets are published, so the coupons will be given even if the tweet is canceled. For more information about this change, please click here:https://twittercommunity.com/t/forthcoming-change-to-web-intent-events/54718
the issue is known and it depends on a Google bug still not fixed.
For more information about the bug, please click here: https://code.google.com/p/google-plus-platform/issues/detail?id=232