I made several Saks GC purchases of $350 using my AMEX HH and its AU. The first 3 posted within a couple days. The last one that posted, transaction 4/24, final purchase posted 4/27, credit 4/28. The one that's pending now was used for purchase 4/26, transaction purchase also listed 4/27, but no credit yet. We just had a weekend so I'll wait a few days before worrying.