That’s the one I ordered as well. They must have shipped it by canoe.
I ship parts to the US and Canada every month and Covid delays considered, Thailand Post is surprisingly efficient and friendly. Sea canoe post is several months in normal circumstances and I have not even tried now.
There are different levels of air post ranging from 1 week, to 6 weeks. Normal air parcel is the best bang, door to door traceable, and even with Covid delays takes about 4 weeks.
He probably used the cheapest air parcel rate, which consolidates until a air can is full, then has lowest freight priority until it clears US Customs
You need to be very clear on what type of shipping he is using
Any incoming duty and tax?