According to https://www.tradingview.com/script/nqQ1DT5a-Squeeze-Momentum-Indicator-LazyBear/,
the two strategies Bollinger Brands and Keltner Channel are quite similar to each other, however, BB is more flexible than KK, when BB lines stand inside KK lines, it suggests that there would be a trend later, and I include ADX and +-DI to help deciding buy and sale.