Thank you Joe, just to conclude this thread, I've implemented the two options, and all worked fine.
Main index: mock_sms
Option1:
Defining 3 Index Patterns this way (without spaces after comma):
mock_sms*,fecha ─────────► fecha default Time field in index pattern
mock_sms*,fechaRespuesta ──► fechaRespuesta default Time field in index pattern
mock_sms,fechaRecepcion ───►fechaRecepcion default Time field in index pattern
then I've implemented 3 different visualizations, each one pointing to each of previous index patterns. Finally, I loaded the three visualizations in a new dashboard. Now, every time the default date in the dashboard is changed, also change the date scale in the three visualizations at the same time.
Option2:
I've implemented three visualizations, each one with the three date fields above using Lens:
Visualization1 - X Axis: fecha
Visualization2 - X Axis: fechaRecepcion
Visualization3 - X Axis: fechaRespuesta
and loaded in a new dashboard. The dashboard behaves the same as in Option1.
The only drawback in Option2 is Lens does not allow too many customizations in visualizations. For example: Change format of labels in a visualization X axis chart
Perhaps Lens needs more time to get more customization features.