Waw primarily joins terms without inherently fixing their temporal order. Fa often indicates close succession or consequential connection. Thumma commonly signals sequence with delay, though particular legal constructions require further care.
“Zayd came and Amr came” does not by itself establish who arrived first. “Zayd came and then Amr came immediately” conveys succession; “Amr came after an interval” conveys delay. Such differences in particles may affect legal interpretation.