The current candle sequence since February 6th is the longest in this bear market. Since the All Time Highs Bitcoin's strongest bullish sequence (Higher Lows) was 40 days in April/ May. The current sequence is 45 days and counting.
This is also evident on key technical indicators:
RSI: Current bullish streak above 40.000 = 45 days (longest since ATH).
CCI: Current bullish streak above -100.000 = 45 days (longest since ATH).
TSI: Current bullish streak above 0.000 = 35 days (longest since ATH).
Can this be a strong indication of bullish sustainability? It certainly is a sign of accumulation of buyers after the December bottom. This is a lengthy process and the longer the price trades above those levels, the stronger the foundation of the accumulation phase gets.