... he should of been in his seat...
No, he should have been doing exactly what he was doing. Not inside of the Senate, listening, but somewhere outside the chambers publicly disrespecting the Dems' case during real time of opening arguments.
Other Senators should also do showcases like Lindsay did here. The Dems need to be sent, a message, about the consequences of raping Article II like they did here.
Since our exact foreign policy in Ukraine, for 2 decades now, is to stomp on corruption before we give Ukraine aid...then it is exactly, unconstitutional, to impeach a President for doing his job by exposing Biden's corruption in Ukraine.