I previously received a formal complaint from a coworker for walking directly to their table and asking/clarifying something. The person told me I should not do

I previously received a formal complaint from a coworker for walking directly to their table and asking/clarifying something. The person told me I should not do that and just slack them instead. On the other hand I worked with people who hated slack and didn't want to have it open if not absolutely needed. Really depends on the people you're working with