Correct, within each group (if you have more than one group, i.e. group1 OR group2), you provide a comma-delimited list of values. This is the logical AND. So:
&tvFilters=`filter2==one,filter1==bar%`
means filter2 equals ’one’ AND filter1 is like ’bar%’.
Of course, since || (OR) is the primary grouping mechanism, you cannot do OR logic within your AND logic—the AND logic is within a group only. IOW:
&tvFilters=`filter2==one,filter1==bar%||filter1==foo%`
means (filter2 equals ’one’ AND filter1 is like ’bar%’) OR (filter1 is like ’foo%’).