When first playing Chrononauts my family came a cross a problem with the wording of the Really Fast Timemachine. If you use the RFT after your normal turn phase to play an Inverter, you draw to replace that card. If you use the RFT to play a patch card though do you draw to replace the card, as via the RTF, and draw 1 extra card as via the patch itself for a total of two cards? My family has been playing that you get 1 card period.
With the Super Deluxe Timemachine (a parallel card to RFT) the language seems to cover this problem by specifically saying to draw to replace before doing the result of your Action or Timewarp.
Using the SDT as a reference I think that the RFT should give you two cards in conjunction with a patch.
You could pull off a parallel combo to the RFT and patch with the SDT and say sell artifact without using the bonus. Since the sacced artifact isn't in your had, in concerns to hand size change both patches and sell artifacts are 1:1 play 1 gain 1. and in conjunction with an appropriate timemahcine you get 1 extra card.
This whole issue actually led to a high pressure argument among my family and its first game of Uberchrononauts. We were all having issues getting to the hand size condition in a reasonably paced fashion. I was stuck only using the SDT combo even though I also had the RFT.
Any clarifactions on use of either gadget would be appreciated.