If the pipe bombs were planted by left wing agitators I guess you could argue the one outside the DNC was to cover up the fact they were left wing.....bit extreme...... unless the plan was for the RNC bomb to go off and the DNC one to "accidentally" not work.
Or they were planted by some random lunatic/ISIS/Anti US type.
Or it was right wing agitators looking to distract law enforcement allowing the right wing to storm the Capitol, hang Mike Pence and stop the steal.
The FBI has assessed over 600 tips, reviewed 39,000 video files, and conducted more than 1,000 interviews in connection with this case. A reward of up to $500,000 remains in place for information leading to the arrest and conviction of the individual responsible.
Hardly dragging their feet......unless of course they actually know who it was and this is all front.