Even the cheapest chains are incredibly strong. 99% of all chain breakage comes from two causes.
#1 is a poor splice, which doesn't apply to you because you have a connector. (unless whoever installed the chain made an unauthorized splice)
#2 is shifting under load with a hyperglide (or same in another brand), which pushes the plates out on the pin, where the support is inadequate and sometime down the road the plate slips off the pin under load and the the chain breaks.
You seem like an experienced rider, so I doubt it's poor shifting, but the first time the chain jammed it might have had the same effect. In a sense you're lucky, because it isn't rare for a snapped chain to snag the FD and rip it off. OTOH if you were really lucky it would have happened 100 yards from home.
Now that you have a new chain, I wouldn't worry about it failing, but I would try to figure out what's casing the chain jams.
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