You are looking for a "one size fits all" answer, and no such thing exists. Its an art dude, there are dozens of different scenario's.Here's TSLA after it recently went way up on earnings. Are you saying there's something after the jump that is explained by technicals?
In TSLA's case, it has (or had as of last week) the highest short interest of any stock in the U.S. So in cases like that, you have to take that into consideration. Then they blow out the expectations, on paper at least, and up it goes. So no... in this case I would say no T/A applies. Amazon is the same thing really. They can adjust their numbers and margins any which way they want for earnings, Bezos could care less about Wall Street's game. AMZN has always been like that. They will beat or miss whenever they so chose. Now... let the dust settle some on both TSLA and AMZN, let us enter a slow period when no other macro events are going on... and slowly but surely T/A will in fact work on them to an extent for both intra-day and as swing trades.