There have been room temperature BECs formed out of polaritons. And high temperature BECs are forming at higher and higher temperatures almost every day.
https://duckduckgo.com/?q=formation+of+high+temperature+bose+einstein+condensate&t=h_&ia=web
My theory is that these particles form LINEAR BECs after they form Luttinger Liquids which form at much higher temperatures than ordinary temperatures due to effects of linearity.
Vibrating 1 Dimensional Luttinger Liquid Bose Einstein Condensate theory [V1DLLBEC]
https://freerepublic.com/focus/f-chat/3968922/posts?page=6#6
It seems to me that a demonstration of BEC formation in conjunction with excess heat production, or any other manifestation of nuclear activity (neutron generation, tritium generation, gamma ray flux, etc.) would be a game-changer for LENR.
A "linear BEC" sounds rather like the "hydroton" model of Edmund Storms, at least to one who's knowledge of the subject is as limited as mine. I see from what you've offered, and from a Google search, that there are many workers who are pursuing BEC-related theoretical explanations for LENR effects. I was not aware of this until now.
Also the Reifenschweiler effect is something I was completely unaware of, and is pleasantly obscure and therefore seems credible, yet another demonstration that there are things going on within condensed matter physics that might have an effect on nuclear processes even at relatively low temperatures and pressures.
All of which conspires to make the effort to strangle cold fusion in the crib all the more reprehensible, short-sighted, and antithetical to the scientific endeavor. Water under the dam, I suppose; many if not most of those who instigated it are retired. I know personally of one physicist who took part in the organized quashing effort who is now deceased. At his funeral, the faculty colleague who gave his scientific eulogy asserted that "if cold fusion ever turned out to be real, the physics researched by Professor "X" (the decedent) will be critical for explaining it."
I've always thought this was a rather odd way to eulogize someone who enthusiastically participated in the organized effort to discredit Pons and Fleischmann back 1989, almost seeming like a posthumous effort to hedge the bets of the dearly departed; perhaps this was as a result of second thoughts expressed by "X" during the years after the hubbub died down. "X" passed away in 2012, not long after he retired, so he had 23 years to think twice about the subject.
BTW, the area of interest of "X" was the production of large quantities spin-stabilized hydrogen, and the exploration of the physics of that phase of the element.