Scott. One of the disadvantages of the petroleum industry is the long lead time between discovery of an oilfield and building the infrastructure to get the oil to the refineries. For example, it took about 20 years for Hibernia oil (from offshore Newfoundland) to find its way to refineries.

If the USA can meet the demand to supply Europe with natural gas, then it must be pulling LNG tankers off other routes. There are no spare LNG tankers out there. Japan and Taiwan would not release their LNG tankers so the USA could sell natural gas to Europe. It takes about three years to build a new tanker. There is little spare capacity for LNG in the world.

I would like to know the full story behind the Norway-to-Poland pipeline. Like why was it shut down in the first place?

The nature of oil/gas shales is that production is quite high in the first few years, then drops precipitously. However, these wells may still produce at low rates for a hundred years. If the USA has to supply Europe and your source believes it can, then it risks depleting its gas shale field to the point where they cannot supply Europe.

I have big doubts about how your trusted source understands how the petroleum industry operates.