Sending OSC-bundles independently from each other, they will not have a certain execution order:

s.sendBundle(0.2, ["/b_query", 0]);
s.sendBundle(0.2, ["/b_query", 1]);

how to force an order on their execution?

// add a little time lapse: minimum 3e-10, which is about a 50 000th of a sample
fork {
	s.sendBundle(0.2, ["/b_query", 0]);
	3e-10.wait; 
	s.sendBundle(0.2, ["/b_query", 1]);
}

// better than this is to use the openBundle / closeBundle methods:

s.openBundle;

	s.sendBundle(0.2, ["/b_query", 0]);
	s.sendBundle(0.2, ["/b_query", 1]);

s.closeBundle;