If the 6th gen fighter bomber can take on some of the H-20's roles and the 6th gen program is going well, the higher ups could decide to delay the H20 for even more development time and to really focus on the high end capabilities that only the H-20 can do.
What unique high-end capabilities does a H-20 have?
The H-20 has got more range and payload because:
1. It's optimised as a subsonic flying wing for payload and range
2. The H-20 has 4 engines rather than 3 engines
But for everything else, there shouldn't be much difference between an H-20 and J-36. If anything, the J-36 will have more capabilities.
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The prior rumours of the H-20 being postponed make a lot more sense now, because there are comparatively few worthwhile targets beyond Guam (3000km away) and the rest of the 2IC. The next worthwhile potential target is Hawaii on the 3IC which is 8000km away.
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