For tech chasing falco I think you have to pay special attention to how they DI your throw.
Knowing when to WD vs fox trot vs wait --> run grab doesn't matter as much vs fox because of the ****ty tech roll, but from watching falcon players in general (idk if it's true for you) I've noticed that they make things a lot harder on themselves by not switching up their initial movement based on the opponent's DI on the throw (before they even tech).
For example at some ranges it's best to just wait and learn a sweetspot timing on when you run forward (I do this with marth a lot), or maybe even run backwards before running forward. If you learn the specific spacing for this you can get it to work so that as you're running towards them you can just grab mid-run if they tech in place, keep running if they tech away, or turn around if they tech back. It's really %/DI specific, but knowing when this works makes it a *lot* easier in the relevant situations because you can just react while running.
In general, I think there's probably a way you can approach every single DI/% situation that creates the optimal situation for you to react with.
I definitely haven't noticed falcon players do this(have specific setups depending on their DI), but maybe I just don't watch enough videos anymore.
Another trick I use at low % is to setup a jab reset. Jab resetting whiffs the majority of the time on falco/fox (yeah I know, it sucks), but if they DI a certain WD distance away at the right % you can actually WD forward and have enough time to use your momentum from the WD to help you land a jab reset on reaction. The timing/spacing works out so that as they miss the tech/tech in place you can choose between jab or grab (while usually in falcon tech chasing, people go for the guessing missed tech vs. predicting a tech) and still react to the tech roll options.
The little tricks are all super situational, but there *are* tricks for every situation. I've always thought if you learned to position yourself well and learn all the sweetspot timings (like in my first example, for running at them) falcon could do it pretty reasonably assuming your reaction time was decent.