I combined 2 screens {N1Mo} and {N1HL} using a few methods. These screens use price momentum to pick from Nasdaq 100 stocks. The momentum measures here are:
PHL252lagged: Price 3 days ago / average of 1-year low and high prices
Mo: 1-year total price return

The screen {picktally_N1Mo_N1HL} uses picktally to find stocks that appear in both screens. To get an average near 3, I set the screen depths to 5. The number of passing stocks varies by month with a range of 0 to 5 picks.

The screen {rank_N1Mo_N1HL} uses the rank function, with an almost identical result as picktally. The 2 screens are merged into 1 screen, and the following steps are added:
rankPHL: rank of [PHL252lagged]
rankMo: rank of [Mo]
rankPHL <= 5
rankMo <= 5

The {Overlaps_N1Mo_N1HL} screen uses a [Overlaps] field to find the stocks in both base screens. The number of passing stocks varies from 3 to 7.
Overlaps: if(rankPHL<=3,if(rankMo<=3,0,100),100)
rankSum: plus(Overlaps,rankPHL,rankMo)
rankSum bottom 3

The {OverlapsMin_N1Mo_N1HL} screen has a different rankSum function. The number of passing stocks varies from 3 to 4.
rankSum: plus(Overlaps,min(rankPHL,rankMo))
rankSum bottom 3

The {OverlapsNoTies_N1Mo_N1HL } screen uses weights in the sum-of-ranks to avoid ties:
rankSum: linear(1,Overlaps,0.999,rankPHL,1,rankMo)
rankSum bottom 3

The average depth of these screens is about 3. {N1HL} has the highest CAGR, followed closely by {OverlapsMin_N1Mo_N1HL}. Results from 19850201 to 20251128 (monthly trading, no friction):

         Screen           CAGR  GSD  Sharpe  Depth            notes
          N1Mo            31.4  49    0.80    3.0               -
          N1HL            34.6  45    0.89    3.0               -
  picktally_N1Mo_N1HL     31.9  47    0.82    3.1   screen overlap at 5 depth
     rank_N1Mo_N1HL       31.9  47    0.82    3.1   screen overlap at 5 depth
   Overlaps_N1Mo_N1HL     33.1  46    0.86    3.2               -
  OverlapsMin_N1Mo_N1HL   33.7  47    0.86    3.3               -
OverlapsNoTies_N1Mo_N1HL  32.6  46    0.85    3.0               -

The number of passing stocks varies depending on which method is used to combine the 2 base screens. Using picktally or rank has a wide range of passing stocks, and sometimes picks no stocks. Using the Overlaps and sumranks fields always picks at least 3 stocks. Using a small weight in sumranks to break ties always picked 3 stocks in this backtest. The number of passing stocks (depth) with the various methods in these backtests was (as a percentage):

depth  picktally  rank   Overlaps  OverlapsMin  OverlapsNoTies
  0      1.2%     1.2%     0.0%        0.0%          0.0%
  1        6%       6%      0%         0%             0%
  2       19%      19%      0%         0%             0%
  3       37%      36%     82%         66%           100%
  4       31%      31%     15%         34%            0%
  5        6%       6%      2%         0%             0%
  6      0.0%     0.0%     0.2%        0.0%          0.0%
  7      0.00%    0.00%    0.02%      0.00%         0.00%

=== links ===
N1Mo is gtr1.net: GTR1 Backtester - N1Mo
N1HL is gtr1.net: GTR1 Backtester - N1HL
picktally_N1Mo_N1HL is gtr1.net: GTR1 Backtester - picktally_N1Mo_N1HL
rank_N1Mo_N1HL is gtr1.net: GTR1 Backtester - rank_N1Mo_N1HL
Overlaps_N1Mo_N1HL is gtr1.net: GTR1 Backtester - Overlaps_N1Mo_N1HL
OverlapsMin_N1Mo_N1HL is gtr1.net: GTR1 Backtester - OverlapsMin_N1Mo_N1HL
OverlapsNoTies_N1Mo_N1HL is gtr1.net: GTR1 Backtester - OverlapsNoTies_N1Mo_N1HL